diff --git a/src/Symfony/Component/HttpFoundation/Response.php b/src/Symfony/Component/HttpFoundation/Response.php
index da9ec1f837..2509e051de 100644
--- a/src/Symfony/Component/HttpFoundation/Response.php
+++ b/src/Symfony/Component/HttpFoundation/Response.php
@@ -128,7 +128,7 @@ class Response
         // headers
         foreach ($this->headers->all() as $name => $values) {
             foreach ($values as $value) {
-                header($name.': '.$value);
+                header($name.': '.$value, false);
             }
         }