diff --git a/dom/canvas/test/webgl-mochitest/mochitest.ini b/dom/canvas/test/webgl-mochitest/mochitest.ini
index 64d9d09d6fc8..d165d495098b 100644
--- a/dom/canvas/test/webgl-mochitest/mochitest.ini
+++ b/dom/canvas/test/webgl-mochitest/mochitest.ini
@@ -100,7 +100,7 @@ skip-if = toolkit == 'android' #bug 865443- seperate suite - the non_conf* tests
 skip-if = toolkit == 'android' #bug 865443- seperate suite - the non_conf* tests pass except for one on armv6 tests
 [test_fuzzing_bugs.html]
 [test_video_fastpath_mp4.html]
-fail-if = (os == 'mac') || (os == 'win' && os_version != '6.1') # no fast path on windows yet (bug 1373165 or 1373770), and mac (bug 1373669)
+fail-if = (os == 'mac') || (os == 'win' && !(e10s && os_version == '6.1')) # no fast path on windows yet (bug 1373165 or 1373770), and mac (bug 1373669)
 [test_video_fastpath_theora.html]
 fail-if = (os == 'mac') || (os == 'win' && os_version != '6.1') # no fast path on windows yet (bug 1373192), and mac (bug 1373702)
 [test_video_fastpath_vp8.html]