diff --git a/Shorewall-core/configure.pl b/Shorewall-core/configure.pl
index 6dbb8f70b..9bfd78f56 100755
--- a/Shorewall-core/configure.pl
+++ b/Shorewall-core/configure.pl
@@ -107,10 +107,10 @@ if ( defined $vendor ) {
     if ( -f '/etc/debian_version' ) {
 	$vendor = 'debian';
 	if ( -l '/sbin/init' ) {
-	    if ( readlink '/sbin/init' =~ /systemd/ ) {
-		$rcfilename = 'debian.systemd';
+	    if ( readlink( '/sbin/init' ) =~ /systemd/ ) {
+		$rcfilename = 'shorewallrc.debian.systemd';
 	    } else {
-	$rcfilename = 'shorewallrc.debian.sysvinit';
+		$rcfilename = 'shorewallrc.debian.sysvinit';
 	    }
 	} else {
 	    $rcfilename = 'shorewallrc.debian.sysvinit';