diff --git a/src/Posting/Captcha.fixes.coffee b/src/Posting/Captcha.fixes.coffee
index 765d57fd3..991b4ba28 100644
--- a/src/Posting/Captcha.fixes.coffee
+++ b/src/Posting/Captcha.fixes.coffee
@@ -79,6 +79,8 @@ Captcha.fixes =
         {token}
       else if $('.fbc-imageselect-challenge > form')
         {working: true}
+      else if (ns = $ 'noscript') and /please enable javascript/i.test(ns.textContent)
+        {disabled: true}
       else
         null
     new Connection(window.parent, '*').send data if data
diff --git a/src/Posting/Captcha.replace.coffee b/src/Posting/Captcha.replace.coffee
index 2d5b2fb34..b96b236dc 100644
--- a/src/Posting/Captcha.replace.coffee
+++ b/src/Posting/Captcha.replace.coffee
@@ -47,3 +47,7 @@ Captcha.replace =
           break if (textarea = $ 'textarea', node)
         textarea.value = token
         $.event 'input', null, textarea
+      disabled: ->
+        msg = $.el 'div',
+          <%= html('Noscript captcha seems to be disabled on 4chan.<br>You may be able to post if you uncheck &quot;Force Noscript Captcha&quot; in your settings.') %>
+        new Notice 'warning', msg