[syslog-ng] NULL byte and Syslog-NG

Hello, I am importing events from the Oracle sys.aud$ table via JDBC, then forwarding these events to a syslog-ng server. Every time a user makes an ODBC connection from a windows machine, a NULL byte appears directly after the host name in the USERHOST field. When syslog-ng gets this raw event it changes the NULL byte from 00 to a line feed 0a. Does anyone know how to stop this from happening, or allow syslog-ng to trim NULL characters? My syslog-ng version is 2.0.1 Thanks in advance, Jon