diff --git a/librewolf.cfg b/librewolf.cfg
index 239a1b2..a9e8800 100755
--- a/librewolf.cfg
+++ b/librewolf.cfg
@@ -186,6 +186,7 @@ defaultPref("webgl.disabled", true);
 
 /** [SECTION] SITE ISOLATION
  * https://wiki.mozilla.org/Project_Fission
+ * this has been rolled out and is now a default on most FF releases
  */
 defaultPref("fission.autostart", true);