diff --git a/src/Exception/OAuthServerException.php b/src/Exception/OAuthServerException.php
index 46a79c1a..b0309290 100644
--- a/src/Exception/OAuthServerException.php
+++ b/src/Exception/OAuthServerException.php
@@ -200,7 +200,7 @@ class OAuthServerException extends \Exception
      */
     public static function accessDenied($hint = null)
     {
-        return new static('The server denied the request.', 401, $hint);
+        return new static('The server denied the request.', 'access_denied', 401, $hint);
     }
 
     /**