diff --git a/layout/reftests/bugs/reftest.list b/layout/reftests/bugs/reftest.list
index 160c4c4a769f..ab28402e01e7 100644
--- a/layout/reftests/bugs/reftest.list
+++ b/layout/reftests/bugs/reftest.list
@@ -106,22 +106,22 @@ fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 28811-2a.html 28811-2-ref.html # bug 38
 == 234686-1.html 234686-ref.html
 == 234686-2.html 234686-ref.html
 == 234686-3.html 234686-ref.html
-== 234686-4.html 234686-ref.html
-== 234686-5.html 234686-ref.html
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-4.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-5.html 234686-ref.html # bug 371316 or other image scaling issue
 == 234686-6.html 234686-ref.html
 == 234686-7.html 234686-ref.html
-== 234686-8.html 234686-ref.html
-== 234686-9.html 234686-ref.html
-== 234686-10.html 234686-ref.html
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-8.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-9.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-10.html 234686-ref.html # bug 371316 or other image scaling issue
 == 234686-11.html 234686-ref.html
-== 234686-12.html 234686-ref.html
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-12.html 234686-ref.html # bug 371316 or other image scaling issue
 == 234686-13.html 234686-ref.html
-== 234686-14.html 234686-ref.html
-== 234686-15.html 234686-ref.html
-== 234686-16.html 234686-ref.html
-== 234686-17.html 234686-ref.html
-== 234686-18.html 234686-ref.html
-== 234686-19.html 234686-ref.html
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-14.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-15.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-16.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-17.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-18.html 234686-ref.html # bug 371316 or other image scaling issue
+fails-if(MOZ_WIDGET_TOOLKIT=="cocoa") == 234686-19.html 234686-ref.html # bug 371316 or other image scaling issue
 == 234964-1.html 234964-1-ref.html
 == 234964-2.html 234964-2-ref.html
 == 235593-1.html 235593-1-ref.html