diff --git a/src/lib/experimental/observe-js-behavior.html b/src/lib/experimental/observe-js-behavior.html
index c616bbbbd9..74077efaab 100644
--- a/src/lib/experimental/observe-js-behavior.html
+++ b/src/lib/experimental/observe-js-behavior.html
@@ -101,7 +101,7 @@
     for (var id in els) {
       var el = els[id];
       for (var path in el.paths) {
-        el.element.notifyPath(path + '.' + prop, value);
+        el.element.set(path + '.' + prop, value);
       }
     }
   },