diff --git a/settings/js/users.js b/settings/js/users.js
index e46c6446b8..7f3b027b4d 100644
--- a/settings/js/users.js
+++ b/settings/js/users.js
@@ -87,7 +87,7 @@ $(document).ready(function(){
 		var user=element.data('username');
 		if($(element).attr('class') == 'groupsselect'){		
 			if(element.data('userGroups')){
-				checked=element.data('userGroups').split(', ');
+				checked=String(element.data('userGroups')).split(', ');
 			}
 			if(user){
 				var checkHandeler=function(group){