diff --git a/src/mess/audio/arcadia.c b/src/mess/audio/arcadia.c
index 06ff70cf5ca..306932a0b44 100644
--- a/src/mess/audio/arcadia.c
+++ b/src/mess/audio/arcadia.c
@@ -1,5 +1,5 @@
 // license:GPL-2.0+
-// copyright-holders:Peter Trauner
+// copyright-holders:David Viens, Peter Trauner
 /***************************************************************************
 
   PeT mess@utanet.at
diff --git a/src/mess/audio/upd1771.c b/src/mess/audio/upd1771.c
index eed88a4b199..96b3b2bb062 100644
--- a/src/mess/audio/upd1771.c
+++ b/src/mess/audio/upd1771.c
@@ -1,5 +1,5 @@
 // license:BSD-3-Clause
-// copyright-holders:Wilbert Pol
+// copyright-holders:David Viens
 /**********************************************************************
 
     NEC uPD1771-017 as used in the Epoch Super Cassette Vision (SCV)