diff --git a/bin/tests/system/stop.pl b/bin/tests/system/stop.pl
index 1045ee374f..1a78ade59f 100644
--- a/bin/tests/system/stop.pl
+++ b/bin/tests/system/stop.pl
@@ -131,6 +131,8 @@ exit($errors);
 sub server_lock_file {
 	my ( $server ) = @_;
 
+	return if (defined($ENV{'CYGWIN'}));
+
 	return $testdir . "/" . $server . "/named.lock" if ($server =~ /^ns/);
 	return if ($server =~ /^ans/);