diff --git a/src/mame/drivers/naomi.cpp b/src/mame/drivers/naomi.cpp
index bed2b2c44b6..5c64c0020f6 100644
--- a/src/mame/drivers/naomi.cpp
+++ b/src/mame/drivers/naomi.cpp
@@ -2982,7 +2982,9 @@ Probably at some stage of development NAOMI was planned as non-JVS system as wel
 	ROM_SYSTEM_BIOS( 0, "bios0", "Ferrari F355 (Export)" ) \
 	ROM_LOAD16_WORD_SWAP_BIOS( 0,  "epr-22851.ic27", 0x000000, 0x200000, CRC(62483677) SHA1(3e3bcacf5f972c376b569f45307ee7fd0b5031b7) ) \
 	ROM_SYSTEM_BIOS( 1, "bios1", "Ferrari F355 (USA)" ) \
-	ROM_LOAD16_WORD_SWAP_BIOS( 1,  "epr-22850.ic27", 0x000000, 0x200000, CRC(28aa539d) SHA1(14485368656af80504b212da620179c49f84c1a2) )
+	ROM_LOAD16_WORD_SWAP_BIOS( 1,  "epr-22850.ic27", 0x000000, 0x200000, CRC(28aa539d) SHA1(14485368656af80504b212da620179c49f84c1a2) ) \
+	ROM_SYSTEM_BIOS( 2, "bios2", "Ferrari F355 (Japan)" ) \
+	ROM_LOAD16_WORD_SWAP_BIOS( 1,  "epr-22849.ic27", 0x000000, 0x200000, CRC(121e009c) SHA1(3beb91f660e60590491b209b6be8584b05a90548) )
 
 #define AIRLINE_BIOS \
 	ROM_REGION( 0x200000, "maincpu", 0) \