diff --git a/test/perf/binding-expressions.html b/test/perf/binding-expressions.html
index 9b70f0b1ab..177a41f249 100644
--- a/test/perf/binding-expressions.html
+++ b/test/perf/binding-expressions.html
@@ -6,6 +6,7 @@
   <script src="../../bower_components/perf-tester/perf.js"></script>
   <script src="../../bower_components/webcomponentsjs/webcomponents-lite.js"></script>
   <link rel="import" href="../../polymer.html">
+  <link rel="import" href="../../lib/mixins/strict-binding-parser.html">
 </head>
 
 <body>
@@ -64,14 +65,14 @@
   }
   console.perf();
   for (var i=0; i<COUNT; i++) {
-    const klass = Polymer({
-      is: 'test-el-' + i,
-      _template: templates[i]
-    });
+    const klass = class Foo extends Polymer.StrictBindingParser(Polymer.Element) {
+      static get _template() { return templates[i]; }
+    };
+    customElements.define('foo-' + i, klass);
     new klass();
   }
   console.perfEnd();
   </script>
 
 </body>
-</html>
\ No newline at end of file
+</html>
