diff --git a/lang/python/docs/dita/howto/part05/certification.dita b/lang/python/docs/dita/howto/part05/certification.dita
index a764e10b..a2299013 100644
--- a/lang/python/docs/dita/howto/part05/certification.dita
+++ b/lang/python/docs/dita/howto/part05/certification.dita
@@ -28,7 +28,7 @@ uid = "Danger Mouse <dm@secret.example.net>"
 
 dmfpr = "177B7C25DB99745EE2EE13ED026D2F19E99E63AA"
 key = c.get_key(dmfpr, secret=True)
-c.key_sign(key, uidsuid, expires_in=2764800)
+c.key_sign(key, uids=uid, expires_in=2764800)
 </codeblock>
       </p>
     </body>