diff --git a/src/Posting/Captcha.v2.coffee b/src/Posting/Captcha.v2.coffee
index 5badd46c8..74bf87075 100644
--- a/src/Posting/Captcha.v2.coffee
+++ b/src/Posting/Captcha.v2.coffee
@@ -26,6 +26,7 @@ Captcha.v2 =
       $.queueTask => @save false
 
   initFrame: ->
+    $.globalEval 'window.focus = function() {};'
     $.on window, 'focus', ->
       $.queueTask ->
         return unless checkbox = $.id 'recaptcha-anchor'