diff --git a/session.rst b/session.rst
index 9ddf3eb028d..108de39c498 100644
--- a/session.rst
+++ b/session.rst
@@ -107,11 +107,6 @@ By default, session attributes are key-value pairs managed with the
 :class:`Symfony\\Component\\HttpFoundation\\Session\\Attribute\\AttributeBag`
 class.
 
-Sessions are automatically started whenever you read, write or even check for
-the existence of data in the session. This may hurt your application performance
-because all users will receive a session cookie. In order to prevent starting
-sessions for anonymous users, you must *completely* avoid accessing the session.
-
 .. note::
 
     Sessions will also be started when using features that rely on them internally,