diff --git a/src/Symfony/Component/HttpFoundation/Request.php b/src/Symfony/Component/HttpFoundation/Request.php
index 7a24f1cf85..ce7258acd6 100644
--- a/src/Symfony/Component/HttpFoundation/Request.php
+++ b/src/Symfony/Component/HttpFoundation/Request.php
@@ -496,9 +496,21 @@ class Request
             return trigger_error($e, E_USER_ERROR);
         }
 
+        $cookieHeader = '';
+        $cookies = array();
+
+        foreach ($this->cookies as $k => $v) {
+            $cookies[] = $k.'='.$v;
+        }
+
+        if (!empty($cookies)) {
+            $cookieHeader = 'Cookie: '.implode('; ', $cookies)."\r\n";
+        }
+
         return
             sprintf('%s %s %s', $this->getMethod(), $this->getRequestUri(), $this->server->get('SERVER_PROTOCOL'))."\r\n".
-            $this->headers."\r\n".
+            $this->headers.
+            $cookieHeader."\r\n".
             $content;
     }
 
diff --git a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
index 1b6426ae93..5dad405761 100644
--- a/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
+++ b/src/Symfony/Component/HttpFoundation/Tests/RequestTest.php
@@ -1454,8 +1454,18 @@ class RequestTest extends TestCase
         $request = new Request();
 
         $request->headers->set('Accept-language', 'zh, en-us; q=0.8, en; q=0.6');
+        $request->cookies->set('Foo', 'Bar');
 
-        $this->assertContains('Accept-Language: zh, en-us; q=0.8, en; q=0.6', $request->__toString());
+        $asString = (string) $request;
+
+        $this->assertContains('Accept-Language: zh, en-us; q=0.8, en; q=0.6', $asString);
+        $this->assertContains('Cookie: Foo=Bar', $asString);
+
+        $request->cookies->set('Another', 'Cookie');
+
+        $asString = (string) $request;
+
+        $this->assertContains('Cookie: Foo=Bar; Another=Cookie', $asString);
     }
 
     public function testIsMethod()