diff --git a/test/unit/polymer.properties-element.html b/test/unit/polymer.properties-element.html
index ccabb72ea9..71588723cd 100644
--- a/test/unit/polymer.properties-element.html
+++ b/test/unit/polymer.properties-element.html
@@ -262,7 +262,7 @@
       // old browsers with broken native properties on instances
       // cannot pass this test.
       if (el.hasOwnProperty('id')) {
-        test.skip();
+        this.skip();
       }
       el.setAttribute('id', 'yo');
       assert.equal(el.id, 'yo');