diff --git a/game/txt/hlp/penncmd.hlp b/game/txt/hlp/penncmd.hlp
index f7546caf2..fe9ec2eff 100644
--- a/game/txt/hlp/penncmd.hlp
+++ b/game/txt/hlp/penncmd.hlp
@@ -658,7 +658,7 @@ See also: @create, clone(), create(), @cpattr
   @command/<switch> <command>
   @command/alias <command>=<alias>
   @command/clone <command>=<clone>
-  @command/restrict <command>=<restriction>
+  @command/restrict <command>=<restriction> [" <error message>]
 
   @command can be used for adding new built-in commands, altering the way a built-in command works, and displaying information about how commands currently work.