diff --git a/cookbook/security/voters.rst b/cookbook/security/voters.rst
index 1760cb43db7..e27f922a700 100644
--- a/cookbook/security/voters.rst
+++ b/cookbook/security/voters.rst
@@ -32,7 +32,7 @@ access, not to grant access.
 Creating a custom Voter
 -----------------------
 
-To blacklist a user based on its IP, you can use the ``request`` service
+To blacklist a user based on its IP, you can use the ``request_stack`` service
 and compare the IP address against a set of blacklisted IP addresses:
 
 .. code-block:: php