diff --git a/src/Umbraco.Web.UI.Client/src/views/common/overlays/treepicker/treepicker.controller.js b/src/Umbraco.Web.UI.Client/src/views/common/overlays/treepicker/treepicker.controller.js
index 76fc8509ce..2e530235d3 100644
--- a/src/Umbraco.Web.UI.Client/src/views/common/overlays/treepicker/treepicker.controller.js
+++ b/src/Umbraco.Web.UI.Client/src/views/common/overlays/treepicker/treepicker.controller.js
@@ -267,12 +267,23 @@ angular.module("umbraco").controller("Umbraco.Overlays.TreePickerController",
 
 		 function multiSelectItem(item) {
 
-			 var i = $scope.model.selection.indexOf(item);
+			 var found = false;
+			 var foundIndex = 0;
 
-			 if (i < 0) {
-				  $scope.model.selection.push(item);
+			 if($scope.model.selection.length > 0) {
+				 for(i = 0; $scope.model.selection.length > i; i++) {
+					 var selectedItem = $scope.model.selection[i];
+					 if(selectedItem.id === item.id) {
+						 found = true;
+						 foundIndex = i;
+					 }
+				 }
+			 }
+
+			 if(found) {
+				 $scope.model.selection.splice(foundIndex, 1);
 			 } else {
-				  $scope.model.selection.splice(i, 1);
+				 $scope.model.selection.push(item);
 			 }
 
 		 }