diff --git a/openslides/agenda/static/js/agenda/base.js b/openslides/agenda/static/js/agenda/base.js
index bcd01ce41..bcf52ae1a 100644
--- a/openslides/agenda/static/js/agenda/base.js
+++ b/openslides/agenda/static/js/agenda/base.js
@@ -159,7 +159,7 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
                                 },
                             };
                         }
-                        ProjectHelper.project(requestData);
+                        return ProjectHelper.project(requestData);
                     } else {  // Project the content object
                         var contentObject = DS.get(this.content_object.collection, this.content_object.id);
                         return contentObject.project(projectorId);
@@ -214,7 +214,7 @@ angular.module('OpenSlidesApp.agenda', ['OpenSlidesApp.users'])
                             },
                         };
                     }
-                    ProjectHelper.project(requestData);
+                    return ProjectHelper.project(requestData);
                 },
                 // check if list of speakers is projected
                 isListOfSpeakersProjected: function () {
diff --git a/openslides/agenda/static/js/agenda/site.js b/openslides/agenda/static/js/agenda/site.js
index da0e0ebfe..5f1341ccd 100644
--- a/openslides/agenda/static/js/agenda/site.js
+++ b/openslides/agenda/static/js/agenda/site.js
@@ -381,13 +381,15 @@ angular.module('OpenSlidesApp.agenda.site', [
         };
         // change whether one item or all subitems should be projected
         $scope.changeItemTree = function (item) {
-            var isProjected = item.isProjected(item.tree);
-            if (isProjected > 0) {
-                // Deactivate and reactivate
-                item.project(isProjected, item.tree);
-                item.project(isProjected, !item.tree);
-            }
+            var tree = item.tree;
             item.tree = !item.tree;
+            var isProjected = item.isProjected(tree);
+            _.forEach(isProjected, function (projectorId) {
+                // Deactivate and reactivate
+                item.project(projectorId, tree).then(function (s) {
+                    item.project(projectorId, !tree);
+                });
+            });
         };
         // check if agenda is projected
         $scope.isAgendaProjected = function (tree) {
diff --git a/openslides/assignments/static/js/assignments/base.js b/openslides/assignments/static/js/assignments/base.js
index fc9da67fc..d5bab1872 100644
--- a/openslides/assignments/static/js/assignments/base.js
+++ b/openslides/assignments/static/js/assignments/base.js
@@ -371,7 +371,7 @@ angular.module('OpenSlidesApp.assignments', [])
                             },
                         };
                     }
-                    ProjectHelper.project(requestData);
+                    return ProjectHelper.project(requestData);
                 },
                 // override isProjected function of jsDataModel factory
                 isProjected: function (poll_id, anyPoll) {
diff --git a/openslides/core/static/js/core/base.js b/openslides/core/static/js/core/base.js
index 1bd9ac01e..8daead7d8 100644
--- a/openslides/core/static/js/core/base.js
+++ b/openslides/core/static/js/core/base.js
@@ -744,7 +744,7 @@ angular.module('OpenSlidesApp.core', [
                     element: {name: this.getResourceName(), id: this.id},
                 };
             }
-            ProjectHelper.project(requestData);
+            return ProjectHelper.project(requestData);
         };
         BaseModel.prototype.isProjected = function() {
             // Returns the ids of all projectors if there is a projector element
@@ -1265,9 +1265,10 @@ angular.module('OpenSlidesApp.core', [
 // with the given data. Also it does the changes done by the server
 // locally and may reverts them, if something went wrong.
 .factory('ProjectHelper', [
+    '$q',
     '$http',
     'Projector',
-    function ($http, Projector) {
+    function ($q, $http, Projector) {
         var uuid4 = function () {
             function s8() {
                 return Math.floor((1 + Math.random()) * 0x100000000)
@@ -1336,12 +1337,15 @@ angular.module('OpenSlidesApp.core', [
 
                 Projector.inject(projectorsChanged);
 
-                $http.post('/rest/core/projector/project/', data).then(null,
-                    function (error) {
+                return $q(function (resolve, reject) {
+                    $http.post('/rest/core/projector/project/', data).then(function (success) {
+                        resolve(success);
+                    }, function (error) {
                         // revert the changed made earlier
                         Projector.inject(originalProjectors);
-                    }
-                );
+                        reject(error);
+                    });
+                });
             },
         };
     }
diff --git a/openslides/motions/static/js/motions/base.js b/openslides/motions/static/js/motions/base.js
index dc2d399b9..3f868e113 100644
--- a/openslides/motions/static/js/motions/base.js
+++ b/openslides/motions/static/js/motions/base.js
@@ -685,7 +685,7 @@ angular.module('OpenSlidesApp.motions', [
                             },
                         };
                     }
-                    ProjectHelper.project(requestData);
+                    return ProjectHelper.project(requestData);
                 },
                 isProjected: function (mode) {
                     var self = this;