diff --git a/layout/reftests/w3c-css/submitted/masking/reftest.list b/layout/reftests/w3c-css/submitted/masking/reftest.list
index c101e3f97bcc..41118dd9dee1 100644
--- a/layout/reftests/w3c-css/submitted/masking/reftest.list
+++ b/layout/reftests/w3c-css/submitted/masking/reftest.list
@@ -14,7 +14,7 @@ fuzzy-if(skiaContent,1,30000) == mask-mode-a.html mask-mode-ref.html
 fuzzy-if(skiaContent,1,30000) == mask-mode-b.html mask-mode-ref.html
 fuzzy-if(skiaContent,1,30000) == mask-mode-c.html mask-mode-ref.html
 fuzzy-if(skiaContent,1,30000) == mask-mode-d.html mask-mode-ref.html
-fuzzy-if(skiaContent,1,30000) == mask-mode-to-mask-type.html mask-mode-to-mask-type-ref.html
+fuzzy-if(skiaContent,1,30000) fuzzy-if(d2d,1,30000) == mask-mode-to-mask-type.html mask-mode-to-mask-type-ref.html
 
 # mask-image test cases
 == mask-image-1a.html mask-image-1-ref.html
@@ -27,8 +27,8 @@ fuzzy-if(skiaContent||winWidget,1,20000) == mask-image-2.html mask-image-2-ref.h
 fuzzy-if(skiaContent||winWidget,1,43) == mask-image-3c.html mask-image-3-ref.html
 fuzzy-if(skiaContent||winWidget,1,43) == mask-image-3d.html mask-image-3-ref.html
 == mask-image-3e.html mask-image-3-ref.html
-fuzzy-if(skiaContent||winWidget,50,85) fuzzy-if(webrender,1,126) == mask-image-3f.html mask-image-3-ref.html
-fuzzy-if(skiaContent||winWidget,50,85) fuzzy-if(webrender,1,126) == mask-image-3g.html mask-image-3-ref.html
+fuzzy-if(skiaContent||winWidget,50,85) fuzzy-if(webrender,1,126) fuzzy-if(d2d,255,1) == mask-image-3f.html mask-image-3-ref.html
+fuzzy-if(skiaContent||winWidget,50,85) fuzzy-if(webrender,1,126) fuzzy-if(d2d,255,1) == mask-image-3g.html mask-image-3-ref.html
 pref(layout.css.clip-path-shapes.enabled,true) fuzzy-if(winWidget,1,3) fuzzy-if(skiaContent,2,12) == mask-image-3h.html mask-image-3-ref.html
 fuzzy-if(skiaContent,71,203) == mask-image-3i.html mask-image-3-ref.html
 == mask-image-4a.html blank.html