diff --git a/src/mame/video/exedexes.cpp b/src/mame/video/exedexes.cpp
index cfd06979ce3..9a40ea1daa1 100644
--- a/src/mame/video/exedexes.cpp
+++ b/src/mame/video/exedexes.cpp
@@ -1,4 +1,4 @@
-// license:???
+// license:BSD-3-Clause
 // copyright-holders:Richard Davies
 /***************************************************************************