diff --git a/src/Server.php b/src/Server.php
index 63adf8e..5d8f514 100644
--- a/src/Server.php
+++ b/src/Server.php
@@ -44,8 +44,8 @@ final public function respondToAccessTokenRequest(Request $request) : Response
             $response = $authorizationServer->respondToAccessTokenRequest($request, $response);
         } catch (OAuthServerException $serverException) {
             $response = $this->createOauthServerExceptionResponse($response, $serverException);
+            $response = $this->addIssuerToResponse($response);
         }
-        $response = $this->addIssuerToResponse($response);
         return $response;
     }