diff --git a/examples/button/js/button.js b/examples/button/js/button.js
index 0784901390..87c8e3e846 100644
--- a/examples/button/js/button.js
+++ b/examples/button/js/button.js
@@ -40,7 +40,6 @@ function actionButtonEventHandler (event) {
   }
 }
 
-
 function toggleButtonEventHandler (event) {
   var type = event.type;