diff --git a/login.php b/login.php
index 947351f..4315fc8 100644
--- a/login.php
+++ b/login.php
@@ -45,7 +45,7 @@ function check_ldap_bind($user_name, $user_pass) {
                 $res = ldap_search($ldap_conn, $config_ldap_base_dn, $filter, ['dn']);
                 if ($res) {
                     $info = ldap_get_entries($ldap_conn, $res);
-                    $user_dn = $info[0]['dn'];
+                    $user_dn = utf8_encode($info[0]['dn']);
                     $res = @ldap_bind($ldap_conn, $user_dn, $user_pass);
                     if ($res) {
                         return TRUE;