diff --git a/src/mame/mess.lst b/src/mame/mess.lst
index fe835de6cc3..89692416e59 100644
--- a/src/mame/mess.lst
+++ b/src/mame/mess.lst
@@ -100,6 +100,8 @@ multmega  // 1994 Sega Multi-Mega (Europe)
 32xe
 32xj
 32x_scd   // 1994 Sega Sega CD (USA w/32X addon)
+32x_mcd   // 1995 Sega Mega-CD (Europe w/32X addon)
+32x_mcdj   // 1994 Sega Mega-CD (Japan w/32X addon)
 segapm    // 1996 Sega Picture Magic (32x type hardware)
 
 saturnjp  // 1994 Sega Saturn (Japan)