diff --git a/modules/authX509/docs/authX509.txt b/modules/authX509/docs/authX509.txt
index 0364cf296a27ab234d78decfb1df78afd86a5398..91f21e36d86133fdc9a936b6745cfb9940f11828 100644
--- a/modules/authX509/docs/authX509.txt
+++ b/modules/authX509/docs/authX509.txt
@@ -45,7 +45,7 @@ Then you must add it as an authentication source. Here is an
 example authsource.php
 
     'x509' => array(
-        'authX509:authX509userCert',
+        'authX509:X509userCert',
         'hostname' => 'ldaps://ldap.example.net',
         'enable_tls' => FALSE,
         'attributes' => array("cn", "uid", "mail", "ou", "sn"),