diff --git a/flag_lists.admin.inc b/flag_lists.admin.inc
index 008764f..11377c4 100644
--- a/flag_lists.admin.inc
+++ b/flag_lists.admin.inc
@@ -88,8 +88,8 @@ function flag_lists_add($type = NULL) {
 function flag_lists_add_js($type = NULL) {
 
   $token = $_REQUEST['form_token'];
-  if ( is_null($token) || $token <> drupal_get_token(variable_get('flag_lists_name','list'))) {
-    drupal_json_output(array('error' => t('Invalid security token.')));
+  if ( is_null($token) || !drupal_valid_token($token, variable_get('flag_lists_name','list'))) { 
+    drupal_json_output(array('error' => t('Are you using an old link?')));
     exit();
   }