diff --git a/toolkit/content/customizeToolbar.js b/toolkit/content/customizeToolbar.js
index 2aad4ba7c4d1..86fbffa9b35f 100644
--- a/toolkit/content/customizeToolbar.js
+++ b/toolkit/content/customizeToolbar.js
@@ -82,9 +82,7 @@ function closeDialog()
   removeToolboxListeners();
   unwrapToolbarItems();
   persistCurrentSets();
-
   notifyParentComplete();
-  window.close();
 }
 
 function slideOpen()