--- perlbal.orig	Mon Dec 20 02:24:35 2010
+++ perlbal	Wed Nov 18 09:40:53 2015
@@ -47,7 +47,7 @@ usage(1) unless
                              'version'  => \$opt_version,
                );
 
-my $default_config = "/etc/perlbal/perlbal.conf";
+my $default_config = "${SYSCONFDIR}/perlbal/perlbal.conf";
 $opt_config = $default_config if ! $opt_config && -e $default_config;
 
 usage(0) if $opt_help;