diff --git a/user.js b/user.js
index f67ab24..0eccd71 100644
--- a/user.js
+++ b/user.js
@@ -809,7 +809,8 @@ user_pref("gfx.font_rendering.opentype_svg.enabled", false);
 user_pref("gfx.font_rendering.graphite.enabled", false);
 /* 1409: limit system font exposure to a whitelist [FF52+] [RESTART]
  * If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed
- * [NOTE] RFP in FF80+ restricts the whitelist to bundled and "Base Fonts" (see 4618)
+ * [NOTE] in FF80 RFP restricts the whitelist to bundled and "Base Fonts"
+ * ...and in FF81+ the whitelist **overrides** RFP's font visibility (see 4618)
  * [WARNING] Creating your own probably highly-unique whitelist will raise your entropy.
  * Eventually privacy.resistFingerprinting (see 4500) will cover this
  * [1] https://bugzilla.mozilla.org/1121643 ***/