diff --git a/dom/tests/mochitest/bugs/Makefile.in b/dom/tests/mochitest/bugs/Makefile.in
index 60e8801bf813..e70aca2320fc 100644
--- a/dom/tests/mochitest/bugs/Makefile.in
+++ b/dom/tests/mochitest/bugs/Makefile.in
@@ -48,6 +48,7 @@ _TEST_FILES	= \
 		test_bug159849.html \
 		test_bug291377.html \
 		test_bug308856.html \
+		test_bug317448.html \
 		test_bug333983.html \
 		test_bug342448.html \
 		test_bug345521.html \
diff --git a/dom/tests/mochitest/bugs/test_bug317448.html b/dom/tests/mochitest/bugs/test_bug317448.html
new file mode 100644
index 000000000000..a6a22c14d847
--- /dev/null
+++ b/dom/tests/mochitest/bugs/test_bug317448.html
@@ -0,0 +1,43 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=317448
+-->
+<head>
+  <title>Test for Bug 317448</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>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=317448">Mozilla Bug 317448</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 317448 **/
+var x = new XMLHttpRequest();
+x.open("GET", document.location.href);
+x.send("");
+netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
+is(x.channel.notificationCallbacks instanceof
+     Components.interfaces.nsIInterfaceRequestor,
+   true, "Must be interface requestor");
+
+var count = {};
+var interfaces = x.channel.notificationCallbacks.
+                 QueryInterface(Components.interfaces.nsIClassInfo).
+                 getInterfaces(count).
+                 map(function(id) {
+                            return Components.interfacesByID[id].toString();
+                     });
+isnot(interfaces.indexOf("nsIInterfaceRequestor"), "-1",
+      "Must have interface requestor classinfo");
+</script>
+</pre>
+</body>
+</html>
+
