diff --git a/inc/drivers_ldap.php b/inc/drivers_ldap.php
index 68e75e2e..d5c7faff 100644
--- a/inc/drivers_ldap.php
+++ b/inc/drivers_ldap.php
@@ -62,7 +62,9 @@ class ldapDrivers
 
       //connect as root
       if (!ldap_bind($this->connect,$config['bindDN'],$config['passDN'])){
-          $c->messages[] = sprintf(i18n( "drivers_ldap : Unable to bind to LDAP, check your bindDN >%s< and passDN >%s< of your configuration or if your server is reachable"),$config['bindDN'],$config['passDN'] );
+          $bindDN = isset($config['bindDN']) ? $config['bindDN'] : 'anonymous';
+          $passDN = isset($config['passDN']) ? $config['passDN'] : 'anonymous';
+          $c->messages[] = sprintf(i18n( "drivers_ldap : Unable to bind to LDAP, check your bindDN >%s< and passDN >%s< of your configuration or if your server is reachable"),$bindDN,$passDN );
           $c->messages[] = sprintf(i18n( "if your use OpenLDAP 2.X.X maybe, unable to connect to LDAP with port %s on host %s"), $port,$host );
           $this->valid=false;
           return ;