diff --git a/test/transformation.js b/test/transformation.js
index bf30fa373b..25edc13872 100644
--- a/test/transformation.js
+++ b/test/transformation.js
@@ -26,7 +26,7 @@ var run = function (task) {
     result = transform(execCode, getOpts(exec.filename));
     execCode = result.code;
 
-    require("../polyfill");
+    require("../lib/6to5/polyfill");
 
     try {
       var fn = new Function("assert", execCode);