diff --git a/user.js b/user.js
index d35ef0d..a5ce6cb 100644
--- a/user.js
+++ b/user.js
@@ -739,7 +739,8 @@ user_pref("security.mixed_content.block_object_subrequest", true);
 /* 1244: enable https-only-mode [FF76+]
  * [NOTE] This is experimental
  * [1] https://bugzilla.mozilla.org/1613063 */
-   // user_pref("dom.security.https_only_mode", true);
+   // user_pref("dom.security.https_only_mode", true); // [FF76+]
+   // user_pref("dom.security.https_only_mode.upgrade_local", true); // [FF77+]
 
 /** CIPHERS [WARNING: do not meddle with your cipher suite: see the section 1200 intro] ***/
 /* 1261: disable 3DES (effective key size < 128)