diff --git a/zephyr/static/js/hashchange.js b/zephyr/static/js/hashchange.js
index 79879dc0a9..006257dfd2 100644
--- a/zephyr/static/js/hashchange.js
+++ b/zephyr/static/js/hashchange.js
@@ -23,7 +23,7 @@ exports.changehash = function (newhash) {
     if (changing_hash) {
         return;
     }
-    $(document).trigger($.Event('hashchange'));
+    $(document).trigger($.Event('hashchange.zephyr'));
     expected_hash = newhash;
     // Some browsers reset scrollTop when changing the hash to "",
     // so we save and restore it.