diff --git a/polymer-ui-animated-pages.html b/polymer-ui-animated-pages.html
index 372852d..e41f848 100644
--- a/polymer-ui-animated-pages.html
+++ b/polymer-ui-animated-pages.html
@@ -104,7 +104,7 @@
         }
         // Apply the changes to make the web animations object.
         transition.apply();
-        var animation = new ParGroup([
+        var animation = new AnimationGroup([
           transition.animation,
           // FIXME: Both 'from' and 'to' items must be visible and have the
           // default z-index. Overrides the class styles. Can be removed if