diff --git a/lib/mixins/property-effects.js b/lib/mixins/property-effects.js
index 5da858450f..ee210592c6 100644
--- a/lib/mixins/property-effects.js
+++ b/lib/mixins/property-effects.js
@@ -320,8 +320,7 @@ function dispatchNotifyEvent(inst, eventName, value, path) {
   if (path) {
     detail.path = path;
   }
-  // Note, since this does not bubble, it should not need to be wrapped.
-  inst.dispatchEvent(new CustomEvent(eventName, { detail }));
+  wrap(/** @type {!HTMLElement} */(inst)).dispatchEvent(new CustomEvent(eventName, { detail }));
 }
 
 /**