diff --git a/dom/browser-element/mochitest/mochitest-oop.ini b/dom/browser-element/mochitest/mochitest-oop.ini
index abe928fc56f1..e65a11c01f12 100644
--- a/dom/browser-element/mochitest/mochitest-oop.ini
+++ b/dom/browser-element/mochitest/mochitest-oop.ini
@@ -31,8 +31,6 @@ skip-if = (toolkit == 'gonk' && !debug)
 disabled = Disabling some OOP tests for WebIDL scope changes
 [test_browserElement_oop_BadScreenshot.html]
 disabled = Disabling some OOP tests for WebIDL scope changes
-[test_browserElement_oop_BrowserWindowNamespace.html]
-skip-if = (toolkit == 'gonk' && !debug)
 [test_browserElement_oop_BrowserWindowResize.html]
 [test_browserElement_oop_Close.html]
 [test_browserElement_oop_CookiesNotThirdParty.html]
diff --git a/dom/browser-element/mochitest/test_browserElement_oop_BrowserWindowNamespace.html b/dom/browser-element/mochitest/test_browserElement_oop_BrowserWindowNamespace.html
deleted file mode 100644
index 3fafbe646614..000000000000
--- a/dom/browser-element/mochitest/test_browserElement_oop_BrowserWindowNamespace.html
+++ /dev/null
@@ -1,13 +0,0 @@
-<!DOCTYPE HTML>
-<html>
-<head>
-  <title>Test for Bug 780351</title>
-  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
-  <script type="application/javascript" src="browserElementTestHelpers.js"></script>
-  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
-</head>
-<body>
-<script type="application/javascript;version=1.7" src="browserElement_BrowserWindowNamespace.js">
-</script>
-</body>
-</html>
\ No newline at end of file
