diff --git a/src/Exception/OAuthServerException.php b/src/Exception/OAuthServerException.php
index 982c8f73..f5630c63 100644
--- a/src/Exception/OAuthServerException.php
+++ b/src/Exception/OAuthServerException.php
@@ -202,7 +202,9 @@ class OAuthServerException extends \Exception
     /**
      * Generate a HTTP response
      *
-     * @return ResponseInterface
+     * @param \Psr\Http\Message\ResponseInterface $response
+     *
+     * @return \Psr\Http\Message\ResponseInterface
      */
     public function generateHttpResponse(ResponseInterface $response = null)
     {