diff --git a/framework/Core/lib/Horde/Core/Auth/Ldap.php b/framework/Core/lib/Horde/Core/Auth/Ldap.php
index 33f69c8e2ed..ff8efd8724b 100644
--- a/framework/Core/lib/Horde/Core/Auth/Ldap.php
+++ b/framework/Core/lib/Horde/Core/Auth/Ldap.php
@@ -36,10 +36,13 @@ public function addUser($userId, $credentials)
      * @param string $oldID       The old user ID.
      * @param string $newID       The new user ID.
      * @param array $credentials  The new credentials
+     * @param string $olddn       NOT USED.
+     * @param string $newdn       NOT USED.
      *
      * @throws Horde_Auth_Exception
      */
-    public function updateUser($oldID, $newID, $credentials)
+    public function updateUser($oldID, $newID, $credentials, $olddn = null,
+                               $newdn = null)
     {
         $auth = $GLOBALS['injector']->getInstance('Horde_Core_Factory_Auth')->create();
 
@@ -55,10 +58,11 @@ public function updateUser($oldID, $newID, $credentials)
      * Delete a set of authentication credentials.
      *
      * @param string $userId  The user ID to delete.
+     * @param string $dn      NOT USED.
      *
      * @throws Horde_Auth_Exception
      */
-    public function removeUser($userId)
+    public function removeUser($userId, $dn = null)
     {
         list($userId, $credentials) = $GLOBALS['injector']->getInstance('Horde_Core_Factory_Auth')->create()->runHook($userId, array(), 'preauthenticate', 'admin');