Fix test-iframe-createIframeWithMessageStub failures on older browsers (

ampproject#5895)
Lith · Dec 22, 2016 · 09e3226 · 09e3226
1 parent 1cd4042
commit 09e3226
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/test/fixtures/served/iframe-stub.html b/test/fixtures/served/iframe-stub.html
@@ -19,7 +19,7 @@
 
   // Echo back a message received from parent window with a marker field
   // 'testStubEcho'.
-  window.addEventListener('message', event => {
+  window.addEventListener('message', function(event) {
     if (event.source == window.parent && !event.data.testStubEcho) {
       const data = {
         testStubEcho: true,