diff --git a/4.2.1-User-Scripts.md b/4.2.1-User-Scripts.md
index b24a5e5..0050537 100644
--- a/4.2.1-User-Scripts.md
+++ b/4.2.1-User-Scripts.md
@@ -25,6 +25,7 @@ We recommend [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmon
 // @namespace          ghacksuserjs
 // @grant              GM.notification
 // Keys for FM:
+// @allFrames          true
 // @matchAboutBlank    true
 // ==/UserScript==