--- a/layout/reftests/transform-3d/reftest.list
+++ b/layout/reftests/transform-3d/reftest.list
@@ -68,17 +68,17 @@ fuzzy(3,99) fuzzy-if(/^Windows\x20NT\x20
 fuzzy(3,99) == animate-cube-degrees.html animate-cube-degrees-ref.html # subpixel AA
 fails-if(styloVsGecko) == animate-cube-degrees-zoom.html animate-cube-degrees-zoom-ref.html
 != animate-cube-degrees-ref.html animate-cube-degrees-zoom-ref.html
 fuzzy-if(gtkWidget,128,100) fuzzy-if(Android||OSX==1010||(gtkWidget&&layersGPUAccelerated),143,100) fuzzy-if(winWidget||OSX<1010,141,100) fails-if(webrender) == preserves3d-nested.html preserves3d-nested-ref.html
 fuzzy-if(cocoaWidget,128,9) == animate-preserve3d-parent.html animate-preserve3d-ref.html # intermittently fuzzy on Mac
 fuzzy-if(cocoaWidget,128,9) == animate-preserve3d-child.html animate-preserve3d-ref.html # intermittently fuzzy on Mac
 == animate-backface-hidden.html about:blank
 fails-if(webrender) == 1245450-1.html green-rect.html
-fuzzy(1,2000) fails-if(webrender) == opacity-preserve3d-1.html opacity-preserve3d-1-ref.html
+fuzzy(1,2000) == opacity-preserve3d-1.html opacity-preserve3d-1-ref.html
 fuzzy(1,15000) == opacity-preserve3d-2.html opacity-preserve3d-2-ref.html
 fuzzy(1,10000) == opacity-preserve3d-3.html opacity-preserve3d-3-ref.html
 fuzzy(1,10000) == opacity-preserve3d-4.html opacity-preserve3d-4-ref.html
 == opacity-preserve3d-5.html opacity-preserve3d-5-ref.html
 fails-if(webrender) == snap-perspective-1.html snap-perspective-1-ref.html
 fails-if(webrender) == mask-layer-1.html mask-layer-ref.html
 fails-if(webrender) == mask-layer-2.html mask-layer-ref.html
 fails-if(webrender) == mask-layer-3.html mask-layer-ref.html