diff --git a/4.2.1-User-Scripts.md b/4.2.1-User-Scripts.md
index d26d877..ddefd19 100644
--- a/4.2.1-User-Scripts.md
+++ b/4.2.1-User-Scripts.md
@@ -1,5 +1,7 @@
 
-Use [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmonkey/), [Greasemonkey](https://addons.mozilla.org/firefox/addon/greasemonkey/) or something similar to run these.
+We recommend [Violentmonkey](https://addons.mozilla.org/firefox/addon/violentmonkey/) to run these
+
+:exclamation: These scripts do NOT work in Greasemonkey due to `@run-at document-start`. They do work in the `legacy extension`
 
 If you would like to submit any scripts to be added to this list, please post the details [here](https://github.com/ghacksuserjs/ghacks-user.js/issues/75) for consideration, thanks. Please stick to scripts that deal with increasing security/privacy, and reducing tracking/fingerprinting.