diff --git a/scripts/kconfig/streamline_config.pl b/scripts/kconfig/streamline_config.pl
index 2fbbbc1ddea02ad573315ef264fc5c79064a1f5e..e3687f98e0c8c9b5ffc931c4c434dadf094cf9d8 100644
--- a/scripts/kconfig/streamline_config.pl
+++ b/scripts/kconfig/streamline_config.pl
@@ -135,7 +135,7 @@ GetOptions("localmodconfig" => \$localmodconfig,
 	   "localyesconfig" => \$localyesconfig);
 
 # Get the build source and top level Kconfig file (passed in)
-my $ksource = $ARGV[0];
+my $ksource = ($ARGV[0] ? $ARGV[0] : '.');
 my $kconfig = $ARGV[1];
 my $lsmod_file = $ENV{'LSMOD'};