diff --git a/user.js b/user.js
index 05eeee9..e32cc21 100644
--- a/user.js
+++ b/user.js
@@ -1130,6 +1130,9 @@ user_pref("_user.js.parrot", "7000 syntax error: the parrot's pushing up daisies
  * [1] https://groups.google.com/g/discuss-webrtc/c/6stQXi72BEU/m/2FwZd24UAQAJ
  * [2] https://datatracker.ietf.org/doc/html/draft-ietf-mmusic-mdns-ice-candidates#section-3.1.1 ***/
    // user_pref("media.peerconnection.enabled", false);
+/* 4021: enable GPC (Global Privacy Control) in non-PB windows
+ * [WHY] Passive (and active) fingerprinting. Mostly redundant with Tracking Protection in ETP Strict (2701) ***/
+   // user_pref("privacy.globalprivacycontrol.enabled", true);
 
 /*** [SECTION 8000]: DON'T BOTHER: FINGERPRINTING
    [WHY] They are insufficient to help anti-fingerprinting and do more harm than good