diff --git a/module/productplan/control.php b/module/productplan/control.php
index fc14dbb45f..e68063d007 100644
--- a/module/productplan/control.php
+++ b/module/productplan/control.php
@@ -516,7 +516,7 @@ class productplan extends control
         /* Update the story order according to the plan. */
         $this->loadModel('story')->sortStoriesOfPlan($planID, $storyIdList, $this->post->orderBy, $this->post->pageID, $this->post->recPerPage);
 
-        return $this->sendSuccess();
+        return $this->send(array('result' => 'success'));
     }
 
     /**