diff --git a/src/mame/drivers/taito_f2.c b/src/mame/drivers/taito_f2.c
index c1b559e5ece..d31a7951db7 100644
--- a/src/mame/drivers/taito_f2.c
+++ b/src/mame/drivers/taito_f2.c
@@ -4556,8 +4556,8 @@ ROM_END
 
 ROM_START( growl )
 	ROM_REGION( 0x100000, "maincpu", 0 )     /* 1024k for 68000 code */
-	ROM_LOAD16_BYTE( "c74-10-1.ic59", 0x00000, 0x40000, CRC(8bf17a85) SHA1(e4aa1f6a107f7602ec25f1f3177c2541008bf1d5) )
-	ROM_LOAD16_BYTE( "c74-08-1.ic61", 0x00001, 0x40000, CRC(bc70396f) SHA1(04022962352e5e0d9a356bc39794b2813997e704) )
+	ROM_LOAD16_BYTE( "c74-10-1.ic59", 0x00000, 0x40000, CRC(8bf17a85) SHA1(e4aa1f6a107f7602ec25f1f3177c2541008bf1d5) ) // Rev 1 PRG ROM kit, to be applied to World, US, or JP sets
+	ROM_LOAD16_BYTE( "c74-08-1.ic61", 0x00001, 0x40000, CRC(bc70396f) SHA1(04022962352e5e0d9a356bc39794b2813997e704) ) // "
 	ROM_LOAD16_BYTE( "c74-11.ic58",   0x80000, 0x40000, CRC(ee3bd6d5) SHA1(71f961b4e3b3156bc52e489eb0a408a1fe537a61) )
 	ROM_LOAD16_BYTE( "c74-14.ic60",   0x80001, 0x40000, CRC(b6c24ec7) SHA1(da8ac05d12c12a58bf5185d723358a0d1a0fe71e) )