ftp nologin problem

[Imran Imtiaz]

I am running ProFTPD 1.2.10 on my bsd server but the problem is that if a user don't have a shell and I've defined his shell as nologin then the ftp server does not logon and give the following error
C:\Documents and Settings\Asif>ftp 192.168.0.3
Connected to 192.168.0.3.
220 ProFTPD 1.2.10 Server (ProFTPD Default Installation) [192.168.0.3]
User (192.168.0.3:(none)): db.backup
331 Password required for db.backup.
Password:
530 Login incorrect.
Login failed.
ftp>

tell me how can I correct this problem cause I don't want to give user a shell.
Regards,
Imran Imtiaz