diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index d67584f139..96d5055e00 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -160,6 +160,7 @@ class Response
         415 => 'Unsupported Media Type',
         416 => 'Range Not Satisfiable',
         417 => 'Expectation Failed',
+        418 => 'I\'m a teapot',                                               // RFC2324
         422 => 'Unprocessable Entity',                                        // RFC4918
         423 => 'Locked',                                                      // RFC4918
         424 => 'Failed Dependency',                                           // RFC4918