diff --git a/src/mame/drivers/welltris.c b/src/mame/drivers/welltris.c
index e5692675dd6..1d00834c6a4 100644
--- a/src/mame/drivers/welltris.c
+++ b/src/mame/drivers/welltris.c
@@ -764,8 +764,8 @@ MACHINE_DRIVER_END
 
 ROM_START( welltris )
 	ROM_REGION( 0x180000, "main", 0 )	/* 68000 code */
-	ROM_LOAD16_BYTE( "j2u.8", 0x000000, 0x20000, BAD_DUMP CRC(00a382a4) SHA1(b6a7e1b360e3cefc582983c8dff6aa28a7c77124) )
-	ROM_LOAD16_BYTE( "j1u.7", 0x000001, 0x20000, BAD_DUMP CRC(abcb008b) SHA1(c71ed431cbd8aea0b4396029203a7b735a8fdac3) )
+	ROM_LOAD16_BYTE( "j2u.8", 0x000000, 0x20000, CRC(7488fe94) SHA1(41874366e2ab763cd827ff712b76ea2da0f9af6a) )
+	ROM_LOAD16_BYTE( "j1u.7", 0x000001, 0x20000, CRC(571413ac) SHA1(5eb9387efb9c1597005abff4d79f4b32aa7c93b2) )
 	/* Space */
 	ROM_LOAD16_BYTE( "lh532j10.10", 0x100000, 0x40000, CRC(1187c665) SHA1(c6c55016e46805694348b386e521a3ef1a443621) )
 	ROM_LOAD16_BYTE( "lh532j11.9",  0x100001, 0x40000, CRC(18eda9e5) SHA1(c01d1dc6bfde29797918490947c89440b58d5372) )