Error at start

I’ve gotten a new error on start with Nagios.

When I run sudo /etc/init.d/nagios start or restart or anything of the sort I get this error back.

[blockquote] * Restarting nagios monitoring daemon nagios error: driver must be ‘mysql’ or ‘Pg’!

/usr/lib/nagios/plugins/check_nagios_db -D <mysql|Pg> -e ] -c <cgi.cfg location>][/blockquote]

Any help would be appreciated.