--- a/layout/reftests/font-face/reftest.list
+++ b/layout/reftests/font-face/reftest.list
@@ -43,16 +43,16 @@ skip HTTP(..) == enable-sheet-6.html mul
 skip HTTP(..) == enable-sheet-7.html multiple-in-family-1-ref.html
 HTTP(..) == disable-sheet-1.html disable-sheet-1-ref.html
 # We're missing disable-sheet-{2,3,6,7} (analogs to
 # enable-sheet{2,3,6,7}) because I don't know how to detect test
 # completion for those cases.
 HTTP(..) == disable-sheet-4.html disable-sheet-4-ref.html
 HTTP(..) == disable-sheet-5.html disable-sheet-4-ref.html
 HTTP(..) == sheet-set-base-1.html sheet-set-base-1-ref.html
-HTTP(..) == sheet-set-switch-1.html sheet-set-switch-1-ref.html
+random-if(MOZ_WIDGET_TOOLKIT=="gtk2") HTTP(..) == sheet-set-switch-1.html sheet-set-switch-1-ref.html # gtk2 failure is bug 468217
 HTTP(..) == insert-rule-1.html insert-rule-1-ref.html
 HTTP(..) == delete-rule-1.html delete-rule-1-ref.html
 HTTP(..) == media-query-add-1.html media-query-add-1-ref.html
 HTTP(..) == media-query-remove-1.html media-query-remove-1-ref.html
 HTTP(..) != media-query-add-1-ref.html media-query-remove-1-ref.html
 
 HTTP(..) == ahem-metrics-1.html ahem-metrics-1-ref.html