diff --git a/src/mame/drivers/kingpin.c b/src/mame/drivers/kingpin.c
index f881756d800..6f72cd2ee2c 100644
--- a/src/mame/drivers/kingpin.c
+++ b/src/mame/drivers/kingpin.c
@@ -1,5 +1,6 @@
-// license:???
-// copyright-holders:???
+// license:BSD-3-Clause
+// copyright-holders:Andrew Gardner
+
 /*
 ACL Manufacturing 1983 hardware (a division of American Communication Laboratories)
 Driver by Andrew Gardner