[syslog-ng]No indication of facility/level on AIX 4.3.3 using syslog-ng 1.4. 14

Is there something special I need to define or configure to have syslog-ng on AIX (4.3.3) write the facility/severity as part of the messages? On solaris we saw [facility/severity] written with each messages, but we don't get this on AIX... Did I miss something while configuring/compiling? Thanks, Andrew