diff --git a/docroot/sites/all/modules/activity/activity.module b/docroot/sites/all/modules/activity/activity.module
index b9c1f31..78a9706 100644
--- a/docroot/sites/all/modules/activity/activity.module
+++ b/docroot/sites/all/modules/activity/activity.module
@@ -812,6 +812,7 @@ function activity_delete($aids) {
  * Implementation of hook_db_rewrite_sql().
  */
 function activity_db_rewrite_sql($query, $primary_table, $primary_field, $args) {
+  $return = '';
   if ($primary_field == 'aid' && count(module_implements('node_grants'))) {
     // add in node_access stuff here
     $node_access = _node_access_where_sql();