diff --git a/test/unit/shady.html b/test/unit/shady.html
index f5c881420e..c2f76dc7ed 100644
--- a/test/unit/shady.html
+++ b/test/unit/shady.html
@@ -459,7 +459,8 @@
 }
 
 function getComposedHTML(node) {
-  return ShadyDOM.nativeTree.innerHTML(node);
+  // Ignore shady CSS scoping
+  return ShadyDOM.nativeTree.innerHTML(node).replace(/ class="[^"]*"/g, '');
 }
 
 function getComposedChildAtIndex(node, index) {