Spam Assassin Logging?

[hostmedic]

Is there an easy way to get SpamAssassin to log to its own log?
I am not so worried if its inbound and outbound together (be nice if they were not however)

I did this by making this change in /usr/local/bin/spamd



Change

my $log_facility = $opt{'syslog'} || 'mail';

to

my $log_facility = $opt{'syslog'} || '/var/log/spam_assassin.log';

My concern is will that stick during an update