diff --git a/Duplicati/Server/webroot/ngax/scripts/controllers/EditBackupController.js b/Duplicati/Server/webroot/ngax/scripts/controllers/EditBackupController.js
index be7001df8..0a09162e0 100644
--- a/Duplicati/Server/webroot/ngax/scripts/controllers/EditBackupController.js
+++ b/Duplicati/Server/webroot/ngax/scripts/controllers/EditBackupController.js
@@ -147,10 +147,7 @@ backupApp.controller('EditBackupController', function ($scope, $routeParams, $lo
         }
     };
 
-    $scope.toggleArraySelection = function (lst, value) {
-        if (lst === null)
-          lst = [];
-
+    function toggleArraySelection(lst, value) {
         var ix = lst.indexOf(value);
 
         if (ix > -1)
@@ -159,6 +156,18 @@ backupApp.controller('EditBackupController', function ($scope, $routeParams, $lo
             lst.push(value);
     };
 
+    $scope.toggleAllowedDays = function(value) {
+        if ($scope.Schedule.AllowedDays == null)
+            $scope.Schedule.AllowedDays = [];
+        toggleArraySelection($scope.Schedule.AllowedDays, value);
+    };
+
+    $scope.toggleExcludeAttributes = function(value) {
+        if ($scope.ExcludeAttributes == null)
+            $scope.ExcludeAttributes = [];
+        toggleArraySelection($scope.ExcludeAttributes, value);
+    };
+
     $scope.save = function() {
 
         if (!EditBackupService.preValidate($scope))
diff --git a/Duplicati/Server/webroot/ngax/templates/addoredit.html b/Duplicati/Server/webroot/ngax/templates/addoredit.html
index 18a09bc48..3dc69cd5b 100755
--- a/Duplicati/Server/webroot/ngax/templates/addoredit.html
+++ b/Duplicati/Server/webroot/ngax/templates/addoredit.html
@@ -216,7 +216,7 @@
                                 name="fileattr_{{attr.value}}"
                                 value="{{attr.value}}"
                                 ng-checked="ExcludeAttributes.indexOf(attr.value) > -1"
-                                ng-click="toggleArraySelection(ExcludeAttributes, attr.value)"
+                                ng-click="toggleExcludeAttributes(attr.value)"
                               />
                               <label for="fileattr_{{attr.value}}">{{attr.name}}</label>
                             </div>
@@ -275,7 +275,7 @@
                             name="dayofweek_{{day.value}}"
                             value="{{day.value}}"
                             ng-checked="Schedule.AllowedDays.indexOf(day.value) > -1"
-                            ng-click="toggleArraySelection(Schedule.AllowedDays, day.value)"
+                            ng-click="toggleAllowedDays(day.value)"
                           />
                           <label for="dayofweek_{{day.value}}">{{day.name}}</label>
                         </div>