diff --git a/sbin/shutdown/shutdown.8 b/sbin/shutdown/shutdown.8
index 4819c8a53be4..00be46538b53 100644
--- a/sbin/shutdown/shutdown.8
+++ b/sbin/shutdown/shutdown.8
@@ -138,6 +138,7 @@ tells login not to let anyone log in
 .Sh SEE ALSO
 .Xr login 1 ,
 .Xr wall 1 ,
+.Xr nologin 5 ,
 .Xr halt 8 ,
 .Xr reboot 8
 .Sh BACKWARD COMPATIBILITY