diff --git a/src/mame/drivers/raiden.cpp b/src/mame/drivers/raiden.cpp
index 00a7c92f10b..bb8e00dcaa9 100644
--- a/src/mame/drivers/raiden.cpp
+++ b/src/mame/drivers/raiden.cpp
@@ -1,5 +1,6 @@
-// license:???
-// copyright-holders:Oliver Bergmann, Bryan McPhail, Randy Mongenel
+// license:BSD-3-Clause
+// copyright-holders:Bryan McPhail
+// thanks-to:Oliver Bergmann,Randy Mongenel (for initial CPU core)
 /***************************************************************************
 
     Seibu Raiden hardware
@@ -9,8 +10,6 @@
     Raiden (Korean license)         (c) 1990 Seibu Kaihatsu
     Raiden (Taiwanese license)      (c) 1990 Seibu Kaihatsu
 
-    driver by Oliver Bergmann, Bryan McPhail, Randy Mongenel
-
     The alternate hardware version is probably newer than the main sets.
     It looks closer to the newer 68000 games, while the main set looks
     closer to Dynamite Duke (1989 game) in terms of graphics registers used, etc.
diff --git a/src/mame/includes/raiden.h b/src/mame/includes/raiden.h
index 810aad20482..ab809bc8552 100644
--- a/src/mame/includes/raiden.h
+++ b/src/mame/includes/raiden.h
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Oliver Bergmann, Bryan McPhail, Randy Mongenel
+// license:BSD-3-Clause
+// copyright-holders:Bryan McPhail
 /*******************************************************************************
 
     Seibu Raiden hardware
diff --git a/src/mame/video/raiden.cpp b/src/mame/video/raiden.cpp
index 728e0e3df48..363c4e492de 100644
--- a/src/mame/video/raiden.cpp
+++ b/src/mame/video/raiden.cpp
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Oliver Bergmann, Bryan McPhail, Randy Mongenel
+// license:BSD-3-Clause
+// copyright-holders:Bryan McPhail
 /*******************************************************************************
 
     Seibu Raiden hardware