diff --git a/dom/tests/mochitest/bugs/iframe_bug440572.html b/dom/tests/mochitest/bugs/iframe_bug440572.html
new file mode 100644
index 00000000000..db8880045a7
--- /dev/null
+++ b/dom/tests/mochitest/bugs/iframe_bug440572.html
@@ -0,0 +1,17 @@
+<html>
+<body>
+<script>
+
+var success = 0;
+
+try {
+  parent[name].success = 1;
+} catch (e) {
+  parent.postMessage(e, "http://localhost:8888");
+}
+
+parent.postMessage(success ? "success" : "failure", "http://localhost:8888");
+</script>
+<p>Move on, nothing to see here...</p>
+</body>
+</html>
diff --git a/dom/tests/mochitest/bugs/test_bug440572.html b/dom/tests/mochitest/bugs/test_bug440572.html
new file mode 100644
index 00000000000..8645d427fac
--- /dev/null
+++ b/dom/tests/mochitest/bugs/test_bug440572.html
@@ -0,0 +1,48 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=440572
+-->
+<head>
+  <title>Test for Bug 440572</title>
+  <script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>        
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body onload="runtests()">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=440572">Mozilla Bug 440572</a>
+
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 440572 **/
+
+var messages = [];
+
+function receiveMessage(e)
+{
+  is(e.origin, "http://example.org", "wrong sender!");
+  messages.push(e.data);
+}
+
+window.addEventListener("message", receiveMessage, false);
+
+function runtests()
+{
+  for (i in messages) {
+    is(messages[i], "success", "test in frame failed.");
+  }
+
+  SimpleTest.finish();
+}
+
+SimpleTest.waitForExplicitFinish();
+</script>
+<br>
+<iframe name="test" src="http://example.org:80/tests/dom/tests/mochitest/bugs/iframe_bug440572.html"></iframe>
+<br>
+<iframe name="content" src="http://example.org:80/tests/dom/tests/mochitest/bugs/iframe_bug440572.html"></iframe>
+<br>
+<iframe name="dump" src="http://example.org:80/tests/dom/tests/mochitest/bugs/iframe_bug440572.html"></iframe>
+</body>
+</html>
+
