diff --git a/demo/tiles/circles-page.html b/demo/tiles/circles-page.html
index 70a4a75..79dc8e3 100644
--- a/demo/tiles/circles-page.html
+++ b/demo/tiles/circles-page.html
@@ -82,7 +82,7 @@
     },
 
     _onClick: function(event) {
-      var target = event.target;
+      var target = Polymer.dom(event).rootTarget;
       if (target.classList.contains('circle')) {
         // configure the page animation
         this.sharedElements = {