diff --git a/cookbook/security/custom_provider.rst b/cookbook/security/custom_provider.rst
index 9d16da52f80..1d2eb2c7780 100644
--- a/cookbook/security/custom_provider.rst
+++ b/cookbook/security/custom_provider.rst
@@ -9,7 +9,8 @@ When a user submits a username and password, the authentication layer asks
 the configured user provider to return a user object for a given username.
 Symfony then checks whether the password of this user is correct and generates
 a security token so the user stays authenticated during the current session.
-Out of the box, Symfony has an "in_memory" and an "entity" user provider.
+Out of the box, Symfony has four user providers: ``in_memory``, ``entity``, 
+``ldap`` and ``chain``.
 In this entry you'll see how you can create your own user provider, which
 could be useful if your users are accessed via a custom database, a file,
 or - as shown in this example - a web service.