diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index b88139a37f56..391c59082aec 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -1083,8 +1083,11 @@ protected function prepareRequestUri()
     {
         $requestUri = '';
 
-        if ($this->headers->has('X_REWRITE_URL') && false !== stripos(PHP_OS, 'WIN')) {
-            // check this first so IIS will catch
+        if ($this->headers->has('X_ORIGINAL_URL') && false !== stripos(PHP_OS, 'WIN')) {
+            // IIS with Microsoft Rewrite Module
+            $requestUri = $this->headers->get('X_ORIGINAL_URL');
+        } elseif ($this->headers->has('X_REWRITE_URL') && false !== stripos(PHP_OS, 'WIN')) {
+            // IIS with ISAPI_Rewrite
             $requestUri = $this->headers->get('X_REWRITE_URL');
         } elseif ($this->server->get('IIS_WasUrlRewritten') == '1' && $this->server->get('UNENCODED_URL') != '') {
             // IIS7 with URL Rewrite: make sure we get the unencoded url (double slash problem)