diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_dev.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_dev.php
index 64c90b4bd2..9e70bf7acd 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_dev.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_dev.php
@@ -25,6 +25,7 @@ if (is_file($_SERVER['DOCUMENT_ROOT'].DIRECTORY_SEPARATOR.$_SERVER['SCRIPT_NAME'
     return false;
 }
 
+$_SERVER = array_merge($_SERVER, $_ENV);
 $_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'].DIRECTORY_SEPARATOR.'app_dev.php';
 
 require 'app_dev.php';
diff --git a/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_prod.php b/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_prod.php
index 4278b4bba1..a3ef29d8db 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_prod.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Resources/config/router_prod.php
@@ -25,6 +25,7 @@ if (is_file($_SERVER['DOCUMENT_ROOT'].DIRECTORY_SEPARATOR.$_SERVER['SCRIPT_NAME'
     return false;
 }
 
+$_SERVER = array_merge($_SERVER, $_ENV);
 $_SERVER['SCRIPT_FILENAME'] = $_SERVER['DOCUMENT_ROOT'].DIRECTORY_SEPARATOR.'app.php';
 
 require 'app.php';