diff --git a/config/auth.php b/config/auth.php
index 8eaff6a80..5ee6fc3cd 100644
--- a/config/auth.php
+++ b/config/auth.php
@@ -82,6 +82,7 @@ return [
         // 	'database' => [
         // 		'model' => App\User::class,
         // 		'sync_passwords' => false,
+        //      'locate_users_by' => 'mail',
         // 		'sync_attributes' => [
         // 			'name' => 'cn',
         // 			'email' => 'mail',