Syntax username

Hi!
I  have problem with declare user name for dnis attribute.

config:
username-chars ".-_!@#$%^&\\/:";

users:
dnis:11         Auth-Type = Accept
                    Service-Type = Authenticate-Only

and error in log:
/usr/local/Radius/etc/raddb/users:28: parse error
пользователь `dnis' исключен