--- a/layout/reftests/invalidation/clipped-animated-transform-1.html
+++ b/layout/reftests/invalidation/clipped-animated-transform-1.html
@@ -21,17 +21,17 @@ body {
 #animatedTransform {
   border: 1px solid blue;
   width: 100px;
   height: 100px;
   position: absolute;
   z-index: 1;
   top: 50px;
   left: 50px;
-  transition: transform ease-in-out .4s;
+  transition: transform ease-in-out 100s forwards;
 }
 
 #clip:hover > #animatedTransform,
 #animatedTransform.animate {
   transform: translateX(200px);
 }
 
 #aboveTransform {