diff --git a/eck.classes.inc b/eck.classes.inc
index 711cd76..107f199 100644
--- a/eck.classes.inc
+++ b/eck.classes.inc
@@ -287,7 +287,7 @@ class EntityType extends DBObject{
     EntityType::loadAll(NULL, TRUE);
     drupal_get_schema(NULL, TRUE);
     entity_info_cache_clear();
-    menu_rebuild();
+    variable_set('menu_rebuild_needed', TRUE);
   }
   
   public function delete(){
@@ -391,7 +391,7 @@ class Bundle extends DBObject{
         Bundle::loadAll(NULL, TRUE);
         drupal_get_schema(NULL, TRUE);
         entity_info_cache_clear();
-        menu_rebuild();
+        variable_set('menu_rebuild_needed', TRUE);
       }else{
         //@todo throw some error
       }