diff --git a/Shorewall/Perl/Shorewall/Config.pm b/Shorewall/Perl/Shorewall/Config.pm
index 8858fbeb0..ac6b0f602 100644
--- a/Shorewall/Perl/Shorewall/Config.pm
+++ b/Shorewall/Perl/Shorewall/Config.pm
@@ -3437,7 +3437,7 @@ sub generate_aux_config() {
 	emit '}';
     }
 
-    my $fn = find_file 'dumpfilter';
+    $fn = find_file 'dumpfilter';
 
     if ( -f $fn ) {
 	emit( '',