[fw-mvc] setHttpResponseCode doesn't work ?

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Hello

This is my index controller :
<?php

class IndexController extends Zend_Controller_Action
{
public function indexAction()
{
$this->getResponse()->setHttpResponseCode(404);
}
}

But the request returns HTTP 200 response. How can I force it to return
404 ?

I have configured layout, and ViewRenderer automatically, and I use
ZendFramework 1.8.2.

Greetings
ß
Rafał (ert16) Trójniak
m@il : ert256@gmail.com
Jid : ert256@gmail.com
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