diff --git a/openslides/agenda/static/js/agenda/base.js b/openslides/agenda/static/js/agenda/base.js
index 132f01b7a..941241c21 100644
--- a/openslides/agenda/static/js/agenda/base.js
+++ b/openslides/agenda/static/js/agenda/base.js
@@ -130,7 +130,7 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
                 },
                 // override isProjected function of jsDataModel factory
                 isProjected: function (tree) {
-                    // Returns the id of the last projector with an agenda-item element. Else return 0.
+                    // Returns all ids of all projectors with an agenda-item element. Otherwise an empty list.
                     if (typeof tree === 'undefined') {
                         tree = false;
                     }
@@ -150,13 +150,13 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
                         }
                         return value;
                     };
-                    var isProjected = 0;
+                    var isProjectedIds = [];
                     Projector.getAll().forEach(function (projector) {
                         if (typeof _.findKey(projector.elements, predicate) === 'string') {
-                            isProjected = projector.id;
+                            isProjectedIds.push(projector.id);
                         }
                     });
-                    return isProjected;
+                    return isProjectedIds;
                 },
                 // project list of speakers
                 projectListOfSpeakers: function(projectorId) {
@@ -175,21 +175,21 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
                 },
                 // check if list of speakers is projected
                 isListOfSpeakersProjected: function () {
-                    // Returns the id of the last projector with an element with the
-                    // name 'agenda/list-of-speakers' and the same id.
+                    // Returns all ids of all projectors with an element with the
+                    // name 'agenda/list-of-speakers' and the same id. Else returns an empty list.
                     var self = this;
                     var predicate = function (element) {
                         return element.name == 'agenda/list-of-speakers' &&
                                typeof element.id !== 'undefined' &&
                                element.id == self.id;
                     };
-                    var isProjected = 0;
+                    var isProjecteds = [];
                     Projector.getAll().forEach(function (projector) {
                         if (typeof _.findKey(projector.elements, predicate) === 'string') {
-                            isProjected = projector.id;
+                            isProjecteds.push(projector.id);
                         }
                     });
-                    return isProjected;
+                    return isProjecteds;
                 },
                 hasSubitems: function(items) {
                     var self = this;
@@ -378,19 +378,19 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
                 }
             },
             isProjected: function () {
-                // Returns the id of the last projector with an agenda-item element. Else return 0.
-                var isProjected = 0;
+                // Returns the ids of all projectors with an agenda-item element. Else return an empty list.
                 var predicate = function (element) {
                     var value;
                     value = element.name == 'agenda/current-list-of-speakers-overlay';
                     return value;
                 };
+                var isProjectedIds = [];
                 Projector.getAll().forEach(function (projector) {
                     if (typeof _.findKey(projector.elements, predicate) === 'string') {
-                        isProjected = projector.id;
+                        isProjectedIds.push(projector.id);
                     }
                 });
-                return isProjected;
+                return isProjectedIds;
             }
         };
     }
diff --git a/openslides/agenda/static/js/agenda/site.js b/openslides/agenda/static/js/agenda/site.js
index 49efc3f78..4526f4850 100644
--- a/openslides/agenda/static/js/agenda/site.js
+++ b/openslides/agenda/static/js/agenda/site.js
@@ -285,8 +285,8 @@ angular.module('OpenSlidesApp.agenda.site', [
         };
         // check if agenda is projected
         $scope.isAgendaProjected = function (tree) {
-            // Returns true if there is a projector element with the name
-            // 'agenda/item-list'.
+            // Returns the ids of all projectors with an element with
+            // the name 'agenda/item-list'. Else returns an empty list.
             var predicate = function (element) {
                 var value;
                 if (tree) {
@@ -302,13 +302,13 @@ angular.module('OpenSlidesApp.agenda.site', [
                 }
                 return value;
             };
-            var projectorId = 0;
+            var projectorIds = [];
             $scope.projectors.forEach(function (projector) {
                 if (typeof _.findKey(projector.elements, predicate) === 'string') {
-                    projectorId = projector.id;
+                    projectorIds.push(projector.id);
                 }
             });
-            return projectorId;
+            return projectorIds;
         };
         // auto numbering of agenda items
         $scope.autoNumbering = function() {
@@ -580,18 +580,18 @@ angular.module('OpenSlidesApp.agenda.site', [
         };
         // same logic as in core/base.js
         $scope.isCurrentLoSProjected = function () {
-            // Returns the projector id if there is a projector element with the name
-            // 'agenda/current-list-of-speakers'. Elsewise returns 0.
-            var projectorId = 0;
+            // Returns the ids of all projectors with an element with the name
+            // 'agenda/current-list-of-speakers'. Elsewise returns an empty list.
+            var projectorIds = [];
             $scope.projectors.forEach(function (projector) {
                 var key = _.findKey(projector.elements, function (element) {
                     return element.name == 'agenda/current-list-of-speakers';
                 });
                 if (typeof key === 'string') {
-                    projectorId = projector.id;
+                    projectorIds.push(projector.id);
                 }
             });
-            return projectorId;
+            return projectorIds;
         };
 
         // go to the list of speakers (management) of the currently
diff --git a/openslides/agenda/static/templates/agenda/current-list-of-speakers.html b/openslides/agenda/static/templates/agenda/current-list-of-speakers.html
index cd0473467..9fc81d3f4 100644
--- a/openslides/agenda/static/templates/agenda/current-list-of-speakers.html
+++ b/openslides/agenda/static/templates/agenda/current-list-of-speakers.html
@@ -15,24 +15,24 @@
       <!-- project -->
       <div class="form-inline button">
         <div os-perms="core.can_manage_projector" class="btn-group" uib-dropdown
-          uib-tooltip="{{ 'Projector' | translate }} {{ isCurrentLoSProjected() }}"
-          tooltip-enable="isCurrentLoSProjected() > 0">
+          uib-tooltip="{{ 'Projector' | translate }} {{ isCurrentLoSProjected()[0] || '' }}"
+          tooltip-enable="isCurrentLoSProjected().length">
           <button type="button" class="btn btn-default btn-sm"
               title="{{ 'Project current list of speakers' | translate }}"
               ng-click="projectCurrentLoS(defaultProjectorId)"
-              ng-class="{ 'btn-primary': isCurrentLoSProjected() > 0 && isCurrentLoSProjected() == defaultProjectorId}">
+              ng-class="{ 'btn-primary': isCurrentLoSProjected().length && inArray(isCurrentLoSProjected(), defaultProjectorId) }">
             <i class="fa fa-video-camera"></i>
             <translate>Current list of speakers</translate>
           </button>
           <button type="button" class="btn btn-default btn-sm" uib-dropdown-toggle
-              ng-class="{ 'btn-primary': isCurrentLoSProjected() > 0 && isCurrentLoSProjected() != defaultProjectorId}">
+              ng-class="{ 'btn-primary': isCurrentLoSProjected().length && !inArray(isCurrentLoSProjected(), defaultProjectorId) }">
             <span class="caret"></span>
           </button>
           <ul class="dropdown-menu" role="menu" aria-labelledby="split-button">
             <li role="menuitem" ng-repeat="projector in projectors">
               <a href="" ng-click="projectCurrentLoS(projector.id)"
-                ng-class="{ 'projected': isCurrentLoSProjected() == projector.id }">
-                <i class="fa fa-video-camera" ng-show="isCurrentLoSProjected() == projector.id"></i>
+                ng-class="{ 'projected': inArray(isCurrentLoSProjected(), projector.id) }">
+                <i class="fa fa-video-camera" ng-show="inArray(isCurrentLoSProjected(), projector.id) "></i>
                 {{ projector.name }}
                 <span ng-if="projector.id == defaultProjectorId">(<translate>Default</translate>)</span>
               </a>
diff --git a/openslides/agenda/static/templates/agenda/item-detail.html b/openslides/agenda/static/templates/agenda/item-detail.html
index 41103ff97..85f9128e2 100644
--- a/openslides/agenda/static/templates/agenda/item-detail.html
+++ b/openslides/agenda/static/templates/agenda/item-detail.html
@@ -11,17 +11,17 @@
       </a>
       <!-- project list of speakers -->
       <span class="btn-group" style="min-width:54px;" uib-dropdown
-        uib-tooltip="{{ 'Projector' | translate }} {{ item.isListOfSpeakersProjected() }}"
-        tooltip-enable="item.isListofSpeakersProjected() > 0"
+        uib-tooltip="{{ 'Projector' | translate }} {{ item.isListOfSpeakersProjected()[0] || '' }}"
+        tooltip-enable="item.isListofSpeakersProjected().length"
         os-perms="core.can_manage_projector">
         <button type="button" class="btn btn-default btn-sm"
           ng-click="item.projectListOfSpeakers(defaultProjectorListOfSpeakersId)"
-          ng-class="{ 'btn-primary': item.isListOfSpeakersProjected() == defaultProjectorListOfSpeakersId }">
+          ng-class="{ 'btn-primary': inArray(item.isListOfSpeakersProjected(), defaultProjectorListOfSpeakersId)  }">
           <i class="fa fa-video-camera"></i>
           <translate>List of speakers</translate>
         </button>
         <button type="button" class="btn btn-default btn-sm slimDropDown"
-          ng-class="{ 'btn-primary': (item.isListOfSpeakersProjected() > 0 && item.isListOfSpeakersProjected() != defaultProjectorListOfSpeakersId) }"
+          ng-class="{ 'btn-primary': (item.isListOfSpeakersProjected().length && !inArray(item.isListOfSpeakersProjected(), defaultProjectorListOfSpeakersId) ) }"
           ng-if="projectors.length > 1"
           uib-dropdown-toggle>
           <span class="caret"></span>
@@ -29,8 +29,8 @@
         <ul class="dropdown-menu" ng-if="projectors.length > 1">
           <li role="menuitem" ng-repeat="projector in projectors">
             <a href="" ng-click="item.projectListOfSpeakers(projector.id)"
-              ng-class="{ 'projected': (item.isListOfSpeakersProjected() == projector.id) }">
-              <i class="fa fa-video-camera" ng-show="item.isListOfSpeakersProjected() == projector.id"></i>
+              ng-class="{ 'projected': inArray(item.isListOfSpeakersProjected(), projector.id) }">
+              <i class="fa fa-video-camera" ng-show="inArray(item.isListOfSpeakersProjected(), projector.id) "></i>
               {{ projector.name }}
               <span ng-if="defaultProjectorListOfSpeakersId == projector.id">(<translate>Default</translate>)</span>
             </a>
diff --git a/openslides/agenda/static/templates/agenda/item-list.html b/openslides/agenda/static/templates/agenda/item-list.html
index 36ad8db65..e6d61586d 100644
--- a/openslides/agenda/static/templates/agenda/item-list.html
+++ b/openslides/agenda/static/templates/agenda/item-list.html
@@ -21,18 +21,18 @@
       </a>
       <!-- project agenda button -->
       <div class="btn-group button" uib-dropdown
-        uib-tooltip="{{ 'Projector' | translate }} {{ isAgendaProjected(mainListTree) }}"
-        tooltip-enable="isAgendaProjected(mainListTree) > 0"
+        uib-tooltip="{{ 'Projector' | translate }} {{ isAgendaProjected(mainListTree)[0] || '' }}"
+        tooltip-enable="isAgendaProjected(mainListTree).length"
         os-perms="core.can_manage_projector">
         <button type="button" class="btn btn-default btn-sm"
             title="{{ 'Project agenda' | translate }}"
             ng-click="projectAgenda(defaultProjectorId_all_items, mainListTree)"
-            ng-class="{ 'btn-primary': isAgendaProjected(mainListTree) > 0 && isAgendaProjected(mainListTree) == defaultProjectorId_all_items}">
+            ng-class="{ 'btn-primary': isAgendaProjected(mainListTree).length && inArray(isAgendaProjected(mainListTree), defaultProjectorId_all_items)}">
           <i class="fa fa-video-camera"></i>
           <translate>Agenda</translate>
         </button>
         <button type="button" class="btn btn-default btn-sm" uib-dropdown-toggle
-            ng-class="{ 'btn-primary': isAgendaProjected(mainListTree) > 0 && isAgendaProjected(mainListTree) != defaultProjectorId_all_items}"
+            ng-class="{ 'btn-primary': isAgendaProjected(mainListTree).length && !inArray(isAgendaProjected(mainListTree), defaultProjectorId_all_items)}"
             ng-if="agendaHasSubitems || projectors.length > 1">
           <span class="caret"></span>
         </button>
@@ -46,8 +46,8 @@
           <li class="divider" ng-show="agendaHasSubitems && projectors.length > 1"></li>
           <li role="menuitem" ng-repeat="projector in projectors" ng-show="projectors.length > 1">
             <a href="" ng-click="projectAgenda(projectorId=projector.id, tree=mainListTree)"
-              ng-class="{ 'projected': isAgendaProjected(mainListTree) == projector.id }">
-              <i class="fa fa-video-camera" ng-show="isAgendaProjected(mainListTree) == projector.id"></i>
+              ng-class="{ 'projected': inArray(isAgendaProjected(mainListTree), projector.id) }">
+              <i class="fa fa-video-camera" ng-show="inArray(isAgendaProjected(mainListTree), projector.id) "></i>
               {{ projector.name }}
               <span ng-if="projector.id == defaultProjectorId_all_items">(<translate>Default</translate>)</span>
             </a>
@@ -162,20 +162,20 @@
           filter: {is_hidden: filter.showHiddenItems} |  filter: {closed: filter.showClosedItems}) |
           limitTo : itemsPerPage : limitBegin"
           class="animate-item"
-          ng-class="{ 'activeline': item.isProjected(), 'selected': item.selected, 'hiddenrow': item.is_hidden}">
+          ng-class="{ 'activeline': item.isProjected().length, 'selected': item.selected, 'hiddenrow': item.is_hidden}">
         <!-- projector column -->
         <td ng-show="!isDeleteMode" os-perms="core.can_manage_projector">
           <div class="btn-group" style="min-width:{{ (item.hasSubitems(items) || projectors.length > 1) ? '54' : '34' }}px;" uib-dropdown
-            uib-tooltip="{{ 'Projector' | translate }} {{ item.isProjected(item.tree) }}"
-            tooltip-enable="item.isProjected(item.tree) > 0">
+            uib-tooltip="{{ 'Projector' | translate }} {{ item.isProjected(item.tree)[0] || '' }}"
+            tooltip-enable="item.isProjected(item.tree).length">
             <button class="btn btn-default btn-sm"
                 title="{{ 'Project item' | translate }}"
                 ng-click="item.project(getProjectionDefault(item), item.tree)"
-                ng-class="{ 'btn-primary': item.isProjected(item.tree) > 0 && item.isProjected(item.tree) == getProjectionDefault(item)}">
+                ng-class="{ 'btn-primary': item.isProjected(item.tree).length && inArray(item.isProjected(item.tree), getProjectionDefault(item))}">
               <i class="fa fa-video-camera"></i>
             </button>
             <button type="button" class="btn btn-default btn-sm slimDropDown"
-                ng-class="{ 'btn-primary': item.isProjected(item.tree) > 0 && item.isProjected(item.tree) != getProjectionDefault(item)}"
+                ng-class="{ 'btn-primary': item.isProjected(item.tree).length && !inArray(item.isProjected(item.tree), getProjectionDefault(item))}"
                 ng-if="item.hasSubitems(items) || projectors.length > 1"
                 uib-dropdown-toggle>
               <span class="caret"></span>
@@ -191,8 +191,8 @@
               <li class="divider" ng-show="item.hasSubitems(items)"></li>
               <li role="menuitem" ng-repeat="projector in projectors">
                 <a href="" ng-click="item.project(projector.id, item.tree)"
-                  ng-class="{ 'projected': item.isProjected(item.tree) == projector.id }">
-                  <i class="fa fa-video-camera" ng-show="item.isProjected(item.tree) == projector.id"></i>
+                  ng-class="{ 'projected': inArray(item.isProjected(item.tree), projector.id) }">
+                  <i class="fa fa-video-camera" ng-show="inArray(item.isProjected(item.tree), projector.id)"></i>
                   {{ projector.name }}
                   <span ng-if="projector.id == getProjectionDefault(item)">(<translate>Default</translate>)</span>
                 </a>
diff --git a/openslides/assignments/static/js/assignments/base.js b/openslides/assignments/static/js/assignments/base.js
index adfe9342e..b727454b8 100644
--- a/openslides/assignments/static/js/assignments/base.js
+++ b/openslides/assignments/static/js/assignments/base.js
@@ -281,8 +281,8 @@ angular.module('OpenSlidesApp.assignments', [])
                 },
                 // override isProjected function of jsDataModel factory
                 isProjected: function (poll_id) {
-                    // Returns the id of the last projector found with an element
-                    // with the name 'assignments/assignment'.
+                    // Returns the ids of all projectors with an element
+                    // with the name 'assignments/assignment'. Else returns an empty list.
                     var self = this;
                     var predicate = function (element) {
                         var value;
@@ -302,13 +302,13 @@ angular.module('OpenSlidesApp.assignments', [])
                         }
                         return value;
                     };
-                    var isProjected = 0;
+                    var isProjectedIds = [];
                     Projector.getAll().forEach(function (projector) {
                         if (typeof _.findKey(projector.elements, predicate) === 'string') {
-                            isProjected = projector.id;
+                            isProjectedIds.push(projector.id);
                         }
                     });
-                    return isProjected;
+                    return isProjectedIds;
                 }
             },
             relations: {
diff --git a/openslides/assignments/static/templates/assignments/assignment-list.html b/openslides/assignments/static/templates/assignments/assignment-list.html
index 7cd597e78..980540c8b 100644
--- a/openslides/assignments/static/templates/assignments/assignment-list.html
+++ b/openslides/assignments/static/templates/assignments/assignment-list.html
@@ -117,7 +117,7 @@
       <tr ng-repeat="assignment in assignmentsFiltered = (assignments | osFilter: filter.search : getFilterString |
           filter: {phase: phaseFilter} | orderBy: sortColumn:reverse)"
           class="animate-item"
-          ng-class="{ 'activeline': assignment.isProjected(), 'selected': assignment.selected }">
+          ng-class="{ 'activeline': assignment.isProjected().length, 'selected': assignment.selected }">
 
         <!-- projector -->
         <td ng-show="!isDeleteMode" os-perms="core.can_manage_projector">
diff --git a/openslides/core/static/js/core/base.js b/openslides/core/static/js/core/base.js
index 646d1c5e3..b860e0165 100644
--- a/openslides/core/static/js/core/base.js
+++ b/openslides/core/static/js/core/base.js
@@ -256,6 +256,16 @@ angular.module('OpenSlidesApp.core', [
     }
 ])
 
+// Make the indexOf available in every scope; needed for the projectorbuttons
+.run([
+    '$rootScope',
+    function ($rootScope) {
+        $rootScope.inArray = function (array, value) {
+            return _.indexOf(array, value) > -1;
+        };
+    }
+])
+
 .factory('loadGlobalData', [
     'ChatMessage',
     'Config',
@@ -393,23 +403,21 @@ angular.module('OpenSlidesApp.core', [
             }
         };
         BaseModel.prototype.isProjected = function() {
-            // Returns the projector id if there is a projector element
-            // with the same name and the same id. Else returns 0.
-            // Attention: if this element is projected multiple times, only the
-            // id of the last projector is returned.
+            // Returns the ids of all projectors if there is a projector element
+            // with the same name and the same id. Else returns an empty list.
             var self = this;
             var predicate = function (element) {
                 return element.name == self.getResourceName() &&
                     typeof element.id !== 'undefined' &&
                     element.id == self.id;
             };
-            var isProjectedId = 0;
+            var isProjectedIds = [];
             Projector.getAll().forEach(function (projector) {
                 if (typeof _.findKey(projector.elements, predicate) === 'string') {
-                    isProjectedId = projector.id;
+                    isProjectedIds.push(projector.id);
                 }
             });
-            return isProjectedId;
+            return isProjectedIds;
         };
         return BaseModel;
     }
diff --git a/openslides/core/static/templates/projector-button.html b/openslides/core/static/templates/projector-button.html
index 13615991d..d79825e6f 100644
--- a/openslides/core/static/templates/projector-button.html
+++ b/openslides/core/static/templates/projector-button.html
@@ -1,15 +1,15 @@
 <div class="btn-group" style="min-width:{{ projectors.length > 1 ? '54' : '34' }}px;" uib-dropdown
-  uib-tooltip="{{ 'Projector' | translate }} {{ model.isProjected(arg) }}"
-  tooltip-enable="model.isProjected(arg) > 0"
+  uib-tooltip="{{ 'Projector' | translate }} {{ model.isProjected(arg)[0] || '' }}"
+  tooltip-enable="model.isProjected(arg).length"
   os-perms="core.can_manage_projector">
   <button type="button" class="btn btn-default btn-sm"
     ng-click="model.project(defaultProjectorId, arg)"
-    ng-class="{ 'btn-primary': model.isProjected(arg) == defaultProjectorId }">
+    ng-class="{ 'btn-primary': inArray(model.isProjected(arg), defaultProjectorId) }">
     <i class="fa fa-video-camera"></i>
     {{ content }}
   </button>
   <button type="button" class="btn btn-default btn-sm slimDropDown"
-    ng-class="{ 'btn-primary': (model.isProjected(arg) > 0 && model.isProjected(arg) != defaultProjectorId) }"
+    ng-class="{ 'btn-primary': (model.isProjected(arg).length && !inArray(model.isProjected(arg), defaultProjectorId)) }"
     ng-if="projectors.length > 1"
     uib-dropdown-toggle>
     <span class="caret"></span>
@@ -17,8 +17,8 @@
   <ul class="dropdown-menu" ng-if="projectors.length > 1">
     <li role="menuitem" ng-repeat="projector in projectors">
       <a href="" ng-click="model.project(projector.id, arg)"
-        ng-class="{ 'projected': (model.isProjected(arg) == projector.id) }">
-        <i class="fa fa-video-camera" ng-show="model.isProjected(arg) == projector.id"></i>
+        ng-class="{ 'projected': inArray(model.isProjected(arg), projector.id) }">
+        <i class="fa fa-video-camera" ng-show="inArray(model.isProjected(arg), projector.id)"></i>
         {{ projector.name }}
         <span ng-if="defaultProjectorId == projector.id">(<translate>Default</translate>)</span>
       </a>
diff --git a/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html b/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html
index 62a266db6..a33805e95 100644
--- a/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html
+++ b/openslides/mediafiles/static/templates/mediafiles/mediafile-list.html
@@ -197,21 +197,21 @@
       <tr ng-repeat="mediafile in mediafilesFiltered = (mediafiles | privateFilter | osFilter: filter.search : getFilterString |
 	  filter: {filetype: filter.showPDFs} | orderBy: sortColumn:reverse )"
           class="animate-item"
-          ng-class="{ 'activeline': mediafile.isProjected(), 'selected': mediafile.selected }">
+          ng-class="{ 'activeline': mediafile.isProjected().length, 'selected': mediafile.selected }">
         <!-- projector column -->
         <td ng-show="!isDeleteMode"
             os-perms="core.can_manage_projector">
           <div class="btn-group" style="min-width:{{ projectors.length > 1 ? '54' : '34' }}px;" uib-dropdown
             ng-if="mediafile.is_presentable"
-            uib-tooltip="{{ 'Projector' | translate }} {{ mediafile.isProjected() }}"
-            tooltip-enable="mediafile.isProjected() > 0">
+            uib-tooltip="{{ 'Projector' | translate }} {{ mediafile.isProjected()[0] || '' }}"
+            tooltip-enable="mediafile.isProjected().length">
             <button type="button" class="btn btn-default btn-sm"
               ng-click="showMediafile(defaultProjectorId, mediafile)"
-              ng-class="{ 'btn-primary': mediafile.isProjected() == defaultProjectorId }">
+              ng-class="{ 'btn-primary': inArray(mediafile.isProjected(), defaultProjectorId)  }">
               <i class="fa fa-video-camera"></i>
             </button>
             <button type="button" class="btn btn-default btn-sm slimDropDown"
-              ng-class="{ 'btn-primary': (mediafile.isProjected() > 0 && mediafile.isProjected() != defaultProjectorId) }"
+              ng-class="{ 'btn-primary': (mediafile.isProjected().length && !inArray(mediafile.isProjected(), defaultProjectorId) ) }"
               ng-if="projectors.length > 1"
               uib-dropdown-toggle>
               <span class="caret"></span>
@@ -219,8 +219,8 @@
             <ul class="dropdown-menu" ng-if="projectors.length > 1">
               <li role="menuitem" ng-repeat="projector in projectors">
                 <a href="" ng-click="showMediafile(projector.id, mediafile)"
-                  ng-class="{ 'projected': (mediafile.isProjected() == projector.id) }">
-                  <i class="fa fa-video-camera" ng-show="mediafile.isProjected() == projector.id"></i>
+                  ng-class="{ 'projected': inArray(mediafile.isProjected(), projector.id)  }">
+                  <i class="fa fa-video-camera" ng-show="inArray(mediafile.isProjected(), projector.id) "></i>
                   {{ projector.name }}
                   <span ng-if="defaultProjectorId == projector.id">(<translate>Default</translate>)</span>
                 </a>
diff --git a/openslides/motions/static/templates/motions/motion-detail/toolbar.html b/openslides/motions/static/templates/motions/motion-detail/toolbar.html
index e9ab1e53c..e2d6bd399 100644
--- a/openslides/motions/static/templates/motions/motion-detail/toolbar.html
+++ b/openslides/motions/static/templates/motions/motion-detail/toolbar.html
@@ -63,7 +63,7 @@
                         <translate>go</translate>
                     </button>
                     <button type="button" class="btn btn-sm btn-default" os-perms="core.can_manage_projector"
-                            ng-show="lineNumberMode != 'none' && motion.isProjected()"
+                            ng-show="lineNumberMode != 'none' && motion.isProjected().length"
                             ng-click="toggleLinesForProjector()"
                             uib-tooltip="{{ 'Show highlighted line also on projector.' | translate }}">
                         <i class="fa" ng-class="linesForProjector ? 'fa-check-square-o' : 'fa-square-o'"></i>&nbsp;
diff --git a/openslides/motions/static/templates/motions/motion-list.html b/openslides/motions/static/templates/motions/motion-list.html
index 0c7196226..914cf5cfa 100644
--- a/openslides/motions/static/templates/motions/motion-list.html
+++ b/openslides/motions/static/templates/motions/motion-list.html
@@ -352,7 +352,7 @@
     <!-- data row -->
     <div class="row data-row" ng-mouseover="motion.hover=true"
       ng-mouseleave="motion.hover=false"
-      ng-class="{'projected': motion.isProjected()}"
+      ng-class="{'projected': motion.isProjected().length}"
       ng-repeat="motion in motionsFiltered = (motions
         | osFilter: filter.search : getFilterString
         | SelectMultipleFilter: multiselectFilter.state : getItemId.state
diff --git a/openslides/users/static/templates/users/user-list.html b/openslides/users/static/templates/users/user-list.html
index 7444431cf..c45e6e067 100644
--- a/openslides/users/static/templates/users/user-list.html
+++ b/openslides/users/static/templates/users/user-list.html
@@ -182,7 +182,7 @@
           </i>
     <tbody>
       <tr ng-repeat="user in usersFiltered | limitTo : itemsPerPage : limitBegin" class="animate-item"
-          ng-class="{ 'activeline': user.isProjected(), 'selected': user.selected  }">
+          ng-class="{ 'activeline': user.isProjected().length, 'selected': user.selected  }">
         <!-- projector column -->
         <td ng-show="!isSelectMode" os-perms="core.can_manage_projector">
           <projector-button model="user" default-projector-id="defaultProjectorId">