diff --git a/basis/furnace/recaptcha/recaptcha.factor b/basis/furnace/recaptcha/recaptcha.factor
index 38ba8e2b1f..7889ffc626 100644
--- a/basis/furnace/recaptcha/recaptcha.factor
+++ b/basis/furnace/recaptcha/recaptcha.factor
@@ -21,7 +21,7 @@ M: recaptcha call-responder*
 
 <PRIVATE
 
-: (render-recaptcha) ( private-key -- xml )
+: (render-recaptcha) ( url -- xml )
     dup
     [XML
         <script type="text/javascript"