diff --git a/src/mame/drivers/naomi.c b/src/mame/drivers/naomi.c
index 74b69b873ad..48f3931dc61 100644
--- a/src/mame/drivers/naomi.c
+++ b/src/mame/drivers/naomi.c
@@ -6132,6 +6132,14 @@ ROM_START( kofnw )
 	ROM_LOAD( "ax2206m01.ic16", 0x6000000, 0x1000000, CRC(e53eb965) SHA1(f50cd53a5859f081d8a278d24a519c9d9b49ab96) )
 ROM_END
 
+ROM_START( kofnwj )
+	ROM_REGION( 0x200000, "maincpu", 0)
+	AW_BIOS
+
+	ROM_REGION( 0x8000000, "user1", ROMREGION_ERASE)
+        ROM_LOAD( "ax2201p01.ic18", 0x0000000, 0x0800000, CRC(ecc4a5c7) SHA1(97c2ef2be95b39bc978474a8243740df50255a8b) )
+ROM_END
+
 ROM_START( kov7sprt )
 	ROM_REGION( 0x200000, "maincpu", 0)
 	AW_BIOS
@@ -6208,5 +6216,6 @@ GAME( 2005, vfurlong, awbios,   aw,    aw,    vfurlong, ROT0, "Sammy",
 GAME( 2005, ngbc,     awbios,   aw,    aw,    ngbc,     ROT0, "Sammy / SNK Playmore",            "Neo-Geo Battle Coliseum", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
 GAME( 2005, fotns,    awbios,   aw,    aw,    fotns,    ROT0, "Sega / Arc System Works",         "Fist Of The North Star", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
 GAME( 2005, kofnw,    awbios,   aw,    aw,    kofnw,    ROT0, "Sammy / SNK Playmore",            "The King of Fighters Neowave", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
+GAME( 2005, kofnwj,   awbios,   aw,    aw,    kofnw,    ROT0, "Sammy / SNK Playmore",            "The King of Fighters Neowave (Japan)", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
 GAME( 2005, xtrmhunt, awbios,   aw,    aw,    xtrmhunt, ROT0, "Sammy",                           "Extreme Hunting", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
 GAME( 2006, xtrmhnt2, awbios,   aw,    aw,    xtrmhnt2, ROT0, "Sega",                            "Extreme Hunting 2", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
diff --git a/src/mame/mamedriv.c b/src/mame/mamedriv.c
index dd9768c3c24..05c1b507e50 100644
--- a/src/mame/mamedriv.c
+++ b/src/mame/mamedriv.c
@@ -4608,6 +4608,7 @@ BOMULEUL CHAJARA SEGA ST-V  1997/04/11
 	DRIVER( rangrmsn )	/* 2004.03 Ranger Mission */
 	DRIVER( salmankt )	/* 2004.06 Salary Man Kintarou Net Select */
 	DRIVER( kofnw )		/* 2004.07 The King of Fighters Neo Wave */
+	DRIVER( kofnwj )       	/* 2004.07 The King of Fighters Neo Wave (Japan) */
 	DRIVER( xtrmhunt )	/* 2004.09 Extreme Hunting */
 						/* 2004.09 Dirty Pig Skin Football */
 						/* 2004.09 Faster than Speed */