diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index c2719ac9ab..b32db52edf 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -42,7 +42,7 @@ class RequestTest extends \PHPUnit_Framework_TestCase
         $this->assertEquals('bar', $request->attributes->get('foo'), '->initialize() takes an array of attributes as its third argument');
 
         $request->initialize(array(), array(), array(), array(), array(), array('HTTP_FOO' => 'bar'));
-        $this->assertEquals('bar', $request->headers->get('FOO'), '->initialize() takes an array of HTTP headers as its fourth argument');
+        $this->assertEquals('bar', $request->headers->get('FOO'), '->initialize() takes an array of HTTP headers as its sixth argument');
     }
 
     public function testGetLocale()