diff --git a/auth/ldap/lib.php b/auth/ldap/lib.php
index a3c5db93ffd..9c684a96a74 100644
--- a/auth/ldap/lib.php
+++ b/auth/ldap/lib.php
@@ -402,7 +402,7 @@ function auth_user_activate ($username) {
 
     $ldapconnection = auth_ldap_connect();
 
-    $userdn = auth_ldap_find_userdn($ldapconnect, $username);
+    $userdn = auth_ldap_find_userdn($ldapconnection, $username);
     
     $newinfo['loginDisabled']="FALSE";