diff --git a/4chan_x.user.js b/4chan_x.user.js
index 4c5179b44..93548709c 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -357,6 +357,9 @@
       }
       $.extend(r, callbacks);
       $.extend(r.upload, upCallbacks);
+      if (type === 'post') {
+        r.withCredentials = true;
+      }
       r.send(form);
       return r;
     },
diff --git a/changelog b/changelog
index c5a00642d..706540354 100644
--- a/changelog
+++ b/changelog
@@ -1,11 +1,11 @@
 master
+- Mayhem
+  Fix 4chan Pass with QR on Firefox.
 
 2.35.1
 - Mayhem
   Add support for 4chan Pass.
   You can now use 'Enter' in keybind combinations.
-  !!! This is not working on Firefox because of Greasemonkey/Scriptish limitations, see
-  https://github.com/greasemonkey/greasemonkey/issues/1630
 
 2.35.0
 - Mayhem
diff --git a/script.coffee b/script.coffee
index eac00f189..77295ce64 100644
--- a/script.coffee
+++ b/script.coffee
@@ -290,6 +290,7 @@ $.extend $,
       r.setRequestHeader key, val
     $.extend r, callbacks
     $.extend r.upload, upCallbacks
+    r.withCredentials = true if type is 'post'
     r.send form
     r
   cache: (url, cb) ->