Accentuation problem

Hi all!

I'm using OpenLDAP 2.4.15 and Samba 3.4.2 (all native from Fedora 11 64 bits). When I try to change the displayName to a name that contains an accent, gives me this error:

# cat /tmp/790 dn: uid=antonio.oliveira,ou=Usuarios,DC changetype: modify replace: displayName displayName: Antônio Kelvis Costa de Oliveira

# ldapmodify -x -H ldap://localhost -D "cn=root,DC" -w "PASS" -P 3 -f /tmp/790 modifying entry "uid=antonio.oliveira,ou=Usuarios,DC" ldap_modify: Invalid syntax (21) additional info: displayName: value #0 invalid per syntax

The problem is with OpenLDAP, Samba, or with the attribute (schema)?

Regards, Rodrigo.