diff --git a/src/Posting/QR.captcha.coffee b/src/Posting/QR.captcha.coffee
index 287715663..c1244cc9d 100644
--- a/src/Posting/QR.captcha.coffee
+++ b/src/Posting/QR.captcha.coffee
@@ -19,7 +19,9 @@ QR.captcha =
     $.after QR.nodes.com.parentNode, root
 
     $.on counter, 'click', @toggle.bind @
-    $.on window, 'captcha:success', => @save false
+    $.on window, 'captcha:success', =>
+      # XXX Greasemonkey 1.x workaround to gain access to GM_* functions.
+      $.queueTask => @save false
 
   shouldFocus: false
   timeouts: {}