diff --git a/chrome/content/zotero/menuAccessKey.js b/chrome/content/zotero/menuAccessKey.js
index dce9933b19..435b275c1c 100644
--- a/chrome/content/zotero/menuAccessKey.js
+++ b/chrome/content/zotero/menuAccessKey.js
@@ -42,7 +42,8 @@ else {
 	document.addEventListener('DOMContentLoaded', init);
 }
 
-function init() {
+function init(event) {
+	if (event.target !== document) return;
 	setAccessKeysHidden(true);
 
 	menuBar = document.querySelector("#main-menubar");