diff --git a/test/cases/keyframes-vendor/input.css b/test/cases/keyframes-vendor/input.css
index e66443ac..fcb5b736 100644
--- a/test/cases/keyframes-vendor/input.css
+++ b/test/cases/keyframes-vendor/input.css
@@ -1,4 +1,4 @@
 @-webkit-keyframes fade {
-  from { opacity: 0 }
+  from { opacity: 0.5 }
   to { opacity: 1 }
 }