--- a/content/media/test/test_can_play_type_mpeg.html
+++ b/content/media/test/test_can_play_type_mpeg.html
@@ -35,17 +35,18 @@ function getPref(name) {
   try {
     pref = SpecialPowers.getBoolPref(name);
   } catch(ex) { }
   return pref;
 }
 
 var haveMp4 = (getPref("media.windows-media-foundation.enabled") && IsWindowsVistaOrLater()) ||
                getPref("media.omx.enabled") ||
-               getPref("media.gstreamer.enabled");
+               getPref("media.gstreamer.enabled") ||
+               getPref("media.fragmented-mp4.exposed");
 // TODO:  Add "getPref("media.plugins.enabled")" once MP4 works on Gingerbread.
              
 check_mp4(document.getElementById('v'), haveMp4);
 
 var haveMp3 = getPref("media.directshow.enabled") ||
               (getPref("media.windows-media-foundation.enabled") && IsWindowsVistaOrLater()) ||
                getPref("media.omx.enabled") ||
                getPref("media.gstreamer.enabled") ||