diff --git a/polymer.html b/polymer.html
index 1baa8f70..b0fe1535 100644
--- a/polymer.html
+++ b/polymer.html
@@ -9,7 +9,6 @@
 <!-- custom-style -->
 <link rel="import" href="src/elements/custom-style.html">
 <script>
-  Polymer.LegacyElement = Polymer.LegacyElementMixin(HTMLElement);
   // bc
-  Polymer.Base = Polymer.LegacyElement.prototype;
-</script>
\ No newline at end of file
+  Polymer.Base = Polymer.LegacyElementMixin(HTMLElement).prototype;
+</script>