diff --git a/src/mame/drivers/taitogn.c b/src/mame/drivers/taitogn.c
index 5fc5f6e1850..5a26cb3111c 100644
--- a/src/mame/drivers/taitogn.c
+++ b/src/mame/drivers/taitogn.c
@@ -1077,7 +1077,14 @@ ROM_START(chaoshea)
 	TAITOGNET_BIOS
 
 	DISK_REGION( "card" )
-	DISK_IMAGE( "chaoshea", 0, SHA1(2f211ac08675ea8ec33c7659a13951db94eaa627))
+	DISK_IMAGE( "chaosheat", 0, SHA1(c13b7d7025eee05f1f696d108801c7bafb3f1356))
+ROM_END
+
+ROM_START(chaoshej)
+	TAITOGNET_BIOS
+
+	DISK_REGION( "card" )
+	DISK_IMAGE( "chaosheatj", 0, SHA1(2f211ac08675ea8ec33c7659a13951db94eaa627))
 ROM_END
 
 
@@ -1236,7 +1243,8 @@ ROM_END
 /* it in every zip file */
 GAME( 1997, taitogn,  0, coh3002t, coh3002t, coh3002t, ROT0, "Sony/Taito", "Taito GNET", GAME_IS_BIOS_ROOT )
 
-GAME( 1998, chaoshea, taitogn,  coh3002t, coh3002t, coh3002t, ROT0,   "Taito", "Chaos Heat (V2.08J)", 0 )
+GAME( 1998, chaoshea, taitogn,  coh3002t, coh3002t, coh3002t, ROT0,   "Taito", "Chaos Heat (V2.09O)", 0 )
+GAME( 1998, chaoshej, chaoshea, coh3002t, coh3002t, coh3002t, ROT0,   "Taito", "Chaos Heat (V2.08J)", 0 )
 GAME( 1998, raycris,  taitogn,  coh3002t, coh3002t, coh3002t, ROT0,   "Taito", "Ray Crisis (V2.03J)", 0 )
 GAME( 1999, spuzbobl, taitogn,  coh3002t, coh3002t, coh3002t, ROT0,   "Taito", "Super Puzzle Bobble (V2.05O)", 0 )
 GAME( 1999, spuzbobj, spuzbobl, coh3002t, coh3002t, coh3002t, ROT0,   "Taito", "Super Puzzle Bobble (V2.04J)", 0 )
diff --git a/src/mame/mamedriv.c b/src/mame/mamedriv.c
index ed3975dbd15..dac246b3723 100644
--- a/src/mame/mamedriv.c
+++ b/src/mame/mamedriv.c
@@ -2975,7 +2975,8 @@ V-V                           TP-027
 
 	/* Taito GNET */
 	DRIVER( taitogn )
-	DRIVER( chaoshea )	/* 1998.10 Chaos Heat (V2.08J) */
+	DRIVER( chaoshea )	/* 1998.10 Chaos Heat (V2.09O) */
+	DRIVER( chaoshej )	/* 1998.10 Chaos Heat (V2.08J) */
 	DRIVER( raycris )	/* 1998.12 Ray Crisis (V2.03J) */
 	DRIVER( otenamih )	/* 1999.02 Otenami Haiken (Success) */
 	DRIVER( spuzbobj )	/* 1999.03 Super Puzzle Bobble (Japan) */