diff --git a/openslides/agenda/static/js/agenda/site.js b/openslides/agenda/static/js/agenda/site.js
index bf279cf53..490677f9a 100644
--- a/openslides/agenda/static/js/agenda/site.js
+++ b/openslides/agenda/static/js/agenda/site.js
@@ -209,8 +209,9 @@ angular.module('OpenSlidesApp.agenda.site', ['OpenSlidesApp.agenda'])
     'operator',
     'Agenda',
     'User',
+    'LimitUsers',
     'item',
-    function ($scope, $filter, $http, $state, operator, Agenda, User, item) {
+    function ($scope, $filter, $http, $state, operator, Agenda, User, LimitUsers, item) {
         Agenda.bindOne(item.id, $scope, 'item');
         User.bindAll({}, $scope, 'users');
         $scope.speakerSelectBox = {};
@@ -218,7 +219,7 @@ angular.module('OpenSlidesApp.agenda.site', ['OpenSlidesApp.agenda'])
         $scope.speakers = $filter('orderBy')(item.speakers, 'weight');
 
         // limit the number of users in ui-select field
-        $scope.limitUsers = 50;
+        $scope.LimitUsers = LimitUsers;
 
         $scope.$watch(function () {
             return Agenda.lastModified();
diff --git a/openslides/agenda/static/templates/agenda/item-detail.html b/openslides/agenda/static/templates/agenda/item-detail.html
index 12ffaafca..0d81a4ee4 100644
--- a/openslides/agenda/static/templates/agenda/item-detail.html
+++ b/openslides/agenda/static/templates/agenda/item-detail.html
@@ -135,7 +135,7 @@
         <ui-select-match placeholder="{{ 'Select or search a participant ...' | translate }}">
           {{ $select.selected.get_full_name() }}
         </ui-select-match>
-        <ui-select-choices repeat="user in users | filter: $select.search | limitTo: limitUsers">
+        <ui-select-choices repeat="user in users | filter: $select.search | limitTo: LimitUsers">
           <div ng-bind-html="user.get_full_name() | highlight: $select.search"></div>
         </ui-select-choices>
       </ui-select>
diff --git a/openslides/assignments/static/js/assignments/site.js b/openslides/assignments/static/js/assignments/site.js
index 82f7e2a31..322cfc42a 100644
--- a/openslides/assignments/static/js/assignments/site.js
+++ b/openslides/assignments/static/js/assignments/site.js
@@ -268,9 +268,10 @@ angular.module('OpenSlidesApp.assignments.site', ['OpenSlidesApp.assignments'])
     'operator',
     'Assignment',
     'User',
+    'LimitUsers',
     'assignment',
     'phases',
-    function($scope, $http, filterFilter, gettext, ngDialog, AssignmentForm, operator, Assignment, User, assignment, phases) {
+    function($scope, $http, filterFilter, gettext, ngDialog, AssignmentForm, operator, Assignment, User, LimitUsers, assignment, phases) {
         User.bindAll({}, $scope, 'users');
         Assignment.bindOne(assignment.id, $scope, 'assignment');
         Assignment.loadRelations(assignment, 'agenda_item');
@@ -279,7 +280,7 @@ angular.module('OpenSlidesApp.assignments.site', ['OpenSlidesApp.assignments'])
         $scope.alert = {};
 
         // limit the number of users in ui-select field
-        $scope.limitUsers = 50;
+        $scope.LimitUsers = LimitUsers;
 
         // open edit dialog
         $scope.openDialog = function (assignment) {
diff --git a/openslides/assignments/static/templates/assignments/assignment-detail.html b/openslides/assignments/static/templates/assignments/assignment-detail.html
index 747fb35eb..8063ebb89 100644
--- a/openslides/assignments/static/templates/assignments/assignment-detail.html
+++ b/openslides/assignments/static/templates/assignments/assignment-detail.html
@@ -95,7 +95,7 @@
         <ui-select-match placeholder="{{ 'Select or search a participant ...' | translate }}">
           {{ $select.selected.get_full_name() }}
         </ui-select-match>
-        <ui-select-choices repeat="user in users | filter: $select.search | limitTo: limitUsers">
+        <ui-select-choices repeat="user in users | filter: $select.search | limitTo: LimitUsers">
           <div ng-bind-html="user.get_full_name() | highlight: $select.search"></div>
         </ui-select-choices>
       </ui-select>
diff --git a/openslides/core/static/js/core/site.js b/openslides/core/static/js/core/site.js
index 5313cff86..53be79942 100644
--- a/openslides/core/static/js/core/site.js
+++ b/openslides/core/static/js/core/site.js
@@ -1040,6 +1040,9 @@ angular.module('OpenSlidesApp.core.site', [
     }
 ])
 
+// define maximum number of users shown in users select fields (e.g. in motion or speakers forms)
+.value('LimitUsers', 50)
+
 .directive('osFocusMe', [
     '$timeout',
     function ($timeout) {
diff --git a/openslides/mediafiles/static/js/mediafiles/site.js b/openslides/mediafiles/static/js/mediafiles/site.js
index 7e3578b86..f366bcf6d 100644
--- a/openslides/mediafiles/static/js/mediafiles/site.js
+++ b/openslides/mediafiles/static/js/mediafiles/site.js
@@ -222,11 +222,13 @@ angular.module('OpenSlidesApp.mediafiles.site', ['ngFileUpload', 'OpenSlidesApp.
     '$scope',
     'MediafileForm',
     'User',
-    function($scope, MediafileForm, User) {
+    'LimitUsers',
+    function($scope, MediafileForm, User, LimitUsers) {
         User.bindAll({}, $scope, 'users');
         $scope.mediafile = {};
         $scope.alert = {};
         $scope.users = User.getAll();
+        $scope.LimitUsers = LimitUsers;
 
         // upload and save mediafile
         $scope.save = function (mediafile) {
@@ -251,11 +253,13 @@ angular.module('OpenSlidesApp.mediafiles.site', ['ngFileUpload', 'OpenSlidesApp.
     'operator',
     'Mediafile',
     'User',
+    'LimitUsers',
     'mediafile',
-    function($scope, operator, Mediafile, User, mediafile) {
+    function($scope, operator, Mediafile, User, LimitUsers, mediafile) {
         User.bindAll({}, $scope, 'users');
         $scope.alert = {};
         $scope.users = User.getAll();
+        $scope.LimitUsers = LimitUsers;
 
         // set initial values for form model by create deep copy of motion object
         // so list/detail view is not updated while editing
diff --git a/openslides/mediafiles/static/templates/mediafiles/mediafile-form.html b/openslides/mediafiles/static/templates/mediafiles/mediafile-form.html
index 4b36aceeb..ee53f62ac 100644
--- a/openslides/mediafiles/static/templates/mediafiles/mediafile-form.html
+++ b/openslides/mediafiles/static/templates/mediafiles/mediafile-form.html
@@ -28,7 +28,7 @@
       <ui-select-match placeholder="{{ 'Select or search a participant ...' | translate }}" data-allow-clear="true">
         {{ $select.selected.get_full_name() }}
       </ui-select-match>
-      <ui-select-choices repeat="user.id as user in users | filter: $select.search | limitTo: 50">
+      <ui-select-choices repeat="user.id as user in users | filter: $select.search | limitTo: LimitUsers">
         <div ng-bind-html="user.get_full_name() | highlight: $select.search"></div>
       </ui-select-choices>
     </ui-select>
diff --git a/openslides/motions/static/js/motions/site.js b/openslides/motions/static/js/motions/site.js
index 52ec79b43..3aada474c 100644
--- a/openslides/motions/static/js/motions/site.js
+++ b/openslides/motions/static/js/motions/site.js
@@ -159,7 +159,8 @@ angular.module('OpenSlidesApp.motions.site', ['OpenSlidesApp.motions'])
     'Tag',
     'User',
     'Workflow',
-    function (gettextCatalog, operator, Editor, Category, Config, Mediafile, Tag, User, Workflow) {
+    'LimitUsers',
+    function (gettextCatalog, operator, Editor, Category, Config, Mediafile, Tag, User, Workflow, LimitUsers) {
         return {
             // ngDialog for motion form
             getDialog: function (motion) {
@@ -207,7 +208,7 @@ angular.module('OpenSlidesApp.motions.site', ['OpenSlidesApp.motions'])
                         label: gettextCatalog.getString('Submitters'),
                         optionsAttr: 'bs-options',
                         options: User.getAll(),
-                        ngOptions: 'option[to.valueProp] as option in to.options | filter: $select.search | limitTo: 50',
+                        ngOptions: 'option[to.valueProp] as option in to.options | filter: $select.search | limitTo: ' + LimitUsers,
                         valueProp: 'id',
                         labelProp: 'full_name',
                         placeholder: gettextCatalog.getString('Select or search a submitter ...')
@@ -318,7 +319,7 @@ angular.module('OpenSlidesApp.motions.site', ['OpenSlidesApp.motions'])
                         label: gettextCatalog.getString('Supporters'),
                         optionsAttr: 'bs-options',
                         options: User.getAll(),
-                        ngOptions: 'option[to.valueProp] as option in to.options | filter: $select.search | limitTo: 50',
+                        ngOptions: 'option[to.valueProp] as option in to.options | filter: $select.search | limitTo: ' + LimitUsers,
                         valueProp: 'id',
                         labelProp: 'full_name',
                         placeholder: gettextCatalog.getString('Select or search a supporter ...')