diff --git a/src/mame/audio/carnival.c b/src/mame/audio/carnival.c
index bfae26fbbf7..cbe22f9d833 100644
--- a/src/mame/audio/carnival.c
+++ b/src/mame/audio/carnival.c
@@ -1,5 +1,5 @@
-// license:???
-// copyright-holders:Peter J.C.Clare
+// license:BSD-3-Clause
+// copyright-holders:Mike Coates, Peter J.C.Clare
 /*****************************************************************************/
 /*                                                                           */
 /*                    (C) Copyright       Peter J.C.Clare                    */
diff --git a/src/mame/audio/circus.c b/src/mame/audio/circus.c
index ae40513c6d9..0b9eac7a306 100644
--- a/src/mame/audio/circus.c
+++ b/src/mame/audio/circus.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 #include "emu.h"
 #include "sound/samples.h"
diff --git a/src/mame/audio/gorf.c b/src/mame/audio/gorf.c
index a9330addd21..0114cb5afb3 100644
--- a/src/mame/audio/gorf.c
+++ b/src/mame/audio/gorf.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /**************************************************************************
 
diff --git a/src/mame/audio/wow.c b/src/mame/audio/wow.c
index 9842da6e660..e6a1b8888bd 100644
--- a/src/mame/audio/wow.c
+++ b/src/mame/audio/wow.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /**************************************************************************
 
diff --git a/src/mame/drivers/circus.c b/src/mame/drivers/circus.c
index ee8a87b5ce8..2535e43bd22 100644
--- a/src/mame/drivers/circus.c
+++ b/src/mame/drivers/circus.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /***************************************************************************
 
diff --git a/src/mame/drivers/cvs.c b/src/mame/drivers/cvs.c
index 413168e910f..1db8597c5a9 100644
--- a/src/mame/drivers/cvs.c
+++ b/src/mame/drivers/cvs.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates, Couriersud
 /***************************************************************************
 
diff --git a/src/mame/drivers/quasar.c b/src/mame/drivers/quasar.c
index 635108f3c50..92cdc363797 100644
--- a/src/mame/drivers/quasar.c
+++ b/src/mame/drivers/quasar.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates, Pierpaolo Prazzoli
 /************************************************************************
 
diff --git a/src/mame/drivers/rainbow.c b/src/mame/drivers/rainbow.c
index d8648ddd904..9472563f769 100644
--- a/src/mame/drivers/rainbow.c
+++ b/src/mame/drivers/rainbow.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /***************************************************************************
 
diff --git a/src/mame/drivers/snowbros.c b/src/mame/drivers/snowbros.c
index 0384fa19020..dee53e1e965 100644
--- a/src/mame/drivers/snowbros.c
+++ b/src/mame/drivers/snowbros.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:David Haywood, ???
+// copyright-holders:David Haywood, Mike Coates
 /***************************************************************************
 
   Snow Brothers (Toaplan) / SemiCom Hardware
diff --git a/src/mame/drivers/wrally.c b/src/mame/drivers/wrally.c
index 5a8c5ab7adb..1867a683915 100644
--- a/src/mame/drivers/wrally.c
+++ b/src/mame/drivers/wrally.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Manuel Abadia, Mike Coates, Nicola Salmoria, Miguel Andel Horna
 /***************************************************************************
 
diff --git a/src/mame/drivers/zac2650.c b/src/mame/drivers/zac2650.c
index 718607a5053..ee0b616a5e1 100644
--- a/src/mame/drivers/zac2650.c
+++ b/src/mame/drivers/zac2650.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /*
  * Signetics 2650 CPU Games
diff --git a/src/mame/includes/circus.h b/src/mame/includes/circus.h
index 0101357cee1..9fc97ae9e03 100644
--- a/src/mame/includes/circus.h
+++ b/src/mame/includes/circus.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 #include "sound/discrete.h"
 
diff --git a/src/mame/includes/cvs.h b/src/mame/includes/cvs.h
index 73c6f93856b..8a1a41c773c 100644
--- a/src/mame/includes/cvs.h
+++ b/src/mame/includes/cvs.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates, Couriersud
 /***************************************************************************
 
diff --git a/src/mame/includes/quasar.h b/src/mame/includes/quasar.h
index 66ca4d12e74..424312da082 100644
--- a/src/mame/includes/quasar.h
+++ b/src/mame/includes/quasar.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates, Pierpaolo Prazzoli
 /***************************************************************************
 
diff --git a/src/mame/includes/rainbow.h b/src/mame/includes/rainbow.h
index 1b693c5c793..ee221bdacd6 100644
--- a/src/mame/includes/rainbow.h
+++ b/src/mame/includes/rainbow.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /*************************************************************************
 
diff --git a/src/mame/includes/wrally.h b/src/mame/includes/wrally.h
index 44bb9c85037..4fe26021140 100644
--- a/src/mame/includes/wrally.h
+++ b/src/mame/includes/wrally.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Manuel Abadia, Mike Coates, Nicola Salmoria, Miguel Andel Horna
 class wrally_state : public driver_device
 {
diff --git a/src/mame/includes/zac2650.h b/src/mame/includes/zac2650.h
index e1d9c01e514..eaf3e198323 100644
--- a/src/mame/includes/zac2650.h
+++ b/src/mame/includes/zac2650.h
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 #include "machine/s2636.h"
 
diff --git a/src/mame/machine/rainbow.c b/src/mame/machine/rainbow.c
index c7655b52a90..8688ce4ee4f 100644
--- a/src/mame/machine/rainbow.c
+++ b/src/mame/machine/rainbow.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /*************************************************************************
 
diff --git a/src/mame/machine/wrally.c b/src/mame/machine/wrally.c
index 9c8f8e29a4a..aac286ff8d6 100644
--- a/src/mame/machine/wrally.c
+++ b/src/mame/machine/wrally.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Manuel Abadia, Mike Coates, Nicola Salmoria, Miguel Andel Horna
 /***************************************************************************
 
diff --git a/src/mame/video/circus.c b/src/mame/video/circus.c
index ce10b97f618..60ef798eebd 100644
--- a/src/mame/video/circus.c
+++ b/src/mame/video/circus.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /***************************************************************************
 
diff --git a/src/mame/video/cvs.c b/src/mame/video/cvs.c
index a1c401f7a0e..068445b6013 100644
--- a/src/mame/video/cvs.c
+++ b/src/mame/video/cvs.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates, Couriersud
 /***************************************************************************
 
diff --git a/src/mame/video/quasar.c b/src/mame/video/quasar.c
index 21658cdeeda..f3d5e89577c 100644
--- a/src/mame/video/quasar.c
+++ b/src/mame/video/quasar.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates, Pierpaolo Prazzoli
 /***************************************************************************
 
diff --git a/src/mame/video/rainbow.c b/src/mame/video/rainbow.c
index 6405b360e4a..e51a1f3cdd1 100644
--- a/src/mame/video/rainbow.c
+++ b/src/mame/video/rainbow.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /***************************************************************************
   Functions to emulate video hardware on these Taito games:
diff --git a/src/mame/video/wrally.c b/src/mame/video/wrally.c
index 4048fe3031b..b9677cdf7b0 100644
--- a/src/mame/video/wrally.c
+++ b/src/mame/video/wrally.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Manuel Abadia, Mike Coates, Nicola Salmoria, Miguel Andel Horna
 /***************************************************************************
 
diff --git a/src/mame/video/zac2650.c b/src/mame/video/zac2650.c
index 9b65a1a40e9..2c87569b253 100644
--- a/src/mame/video/zac2650.c
+++ b/src/mame/video/zac2650.c
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Mike Coates
 /*************************************************************/
 /*                                                           */