symfony
diff --git a/‎book/from_flat_php_to_symfony2.rst
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@@ -480,8 +480,8 @@ the HTTP response being returned. Use them to improve the blog:
     // echo the headers and send the response
     $response->send();
 
-.. versionadded:: 2.5
-    Support for HTTP status code constants was introduced in Symfony 2.5.
+.. versionadded:: 2.4
+    Support for HTTP status code constants was introduced in Symfony 2.4.
 
 The controllers are now responsible for returning a ``Response`` object.
 To make this easier, you can add a new ``render_template()`` function, which,