diff --git a/user.js b/user.js
index a76d3ef..6ea71ab 100644
--- a/user.js
+++ b/user.js
@@ -1571,9 +1571,10 @@ user_pref("privacy.firstparty.isolate.restrict_opener_access", true);
       This spoof *shouldn't* affect core chrome/Firefox performance
  ** 1217238 - reduce precision of time exposed by javascript (FF55+)
  ** 1369303 - spoof/disable performance API (see 2410-deprecated, 4602, 4603) (FF56+)
- ** 1333651 & 1383495 & 1396468 & 1393283 - spoof Navigator API (see section 4700) (FF56+)
+ ** 1333651 & 1383495 & 1396468 & 1393283 & 1404608 - spoof Navigator API (see section 4700) (FF56+)
       FF56: The version number will be rounded down to the nearest multiple of 10
       FF57+: The version number will match current ESR
+      FF59+: The OS will be reported as Windows, OSX, Android, or Linux (to reduce breakage)
  ** 1369319 - disable device sensor API (see 4604) (FF56+)
  ** 1369357 - disable site specific zoom (see 4605) (FF56+)
  ** 1337161 - hide gamepads from content (see 4606) (FF56+)