diff --git a/src/core/4.widget.js b/src/core/4.widget.js
index df560dc24..957ae836f 100644
--- a/src/core/4.widget.js
+++ b/src/core/4.widget.js
@@ -743,6 +743,7 @@
         },
 
         _unMount: function () {
+            this._assetMounted();
             this.__destroy();
             this.fireEvent(BI.Events.UNMOUNT);
             this.purgeListeners();