diff --git a/meta/definitions/authorize.php b/meta/definitions/authorize.php
index 5fa621b..816f073 100644
--- a/meta/definitions/authorize.php
+++ b/meta/definitions/authorize.php
@@ -29,8 +29,8 @@ return [
         return function(array $errorData) {
             return HttpFactory::createJsonResponse($errorData + [
                 'api.error' => "Authorization failed",
-                'api.datetime' => (new \DateTime)->format(\DateTime::ATOM),
-            ], 401);
+                'api.datetime' => (new \DateTime)->format(\DateTime::ISO8601),
+            ], 403);
         };
     },