diff --git a/auth-server-client-credentials.md b/auth-server-client-credentials.md
index a2b01de1..a1e10419 100755
--- a/auth-server-client-credentials.md
+++ b/auth-server-client-credentials.md
@@ -34,7 +34,7 @@ $router->post('/access_token', function (Request $request) use ($server) {
         $response = $server->issueAccessToken();
         return new Response(
             json_encode($response),
-            200
+            200,
             [
                 'Content-type'  =>  'application/json',
                 'Cache-Control' =>  'no-store',
@@ -56,4 +56,4 @@ $router->post('/access_token', function (Request $request) use ($server) {
     }
 
 });
-~~~
\ No newline at end of file
+~~~