diff --git a/src/mm-tab/mm-tab.js b/src/mm-tab/mm-tab.js
index 7addf5b5..ad5b3f8f 100644
--- a/src/mm-tab/mm-tab.js
+++ b/src/mm-tab/mm-tab.js
@@ -47,7 +47,7 @@
 				var instance = this.stamp();
 				Polymer.dom(this).appendChild(instance.root);
 
-				if(this._callback) this._callback(instance);
+				if(this._callback) this.async(this._callback.bind(this,instance));
 
 				this._contentLoaded = true;