diff --git a/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php b/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
index 9e0617723a..1969f71e9e 100644
--- a/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
+++ b/src/Symfony/Bundle/FrameworkBundle/EventListener/TestSessionListener.php
@@ -52,8 +52,6 @@ class TestSessionListener implements EventSubscriberInterface
 
         if ($cookies->has($session->getName())) {
             $session->setId($cookies->get($session->getName()));
-        } else {
-            $session->migrate(false);
         }
     }