diff --git a/src/Posting/QR.captcha.coffee b/src/Posting/QR.captcha.coffee
index fdf5355c4..287715663 100644
--- a/src/Posting/QR.captcha.coffee
+++ b/src/Posting/QR.captcha.coffee
@@ -145,6 +145,7 @@ QR.captcha =
 
   clear: ->
     return unless @captchas.length
+    $.forceSync 'captchas'
     now = Date.now()
     for captcha, i in @captchas
       break if captcha.timeout > now