diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index ddbb4fb049..18516cde7b 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -101,6 +101,7 @@ class Response
         415 => 'Unsupported Media Type',
         416 => 'Requested Range Not Satisfiable',
         417 => 'Expectation Failed',
+        418 => 'I\'m a teapot',
         422 => 'Unprocessable Entity',  // RFC4918
         423 => 'Locked',                // RFC4918
         424 => 'Failed Dependency',     // RFC4918