diff --git a/src/mame/drivers/mystwarr.c b/src/mame/drivers/mystwarr.c
index c718c8b219e..ae4e4f88164 100644
--- a/src/mame/drivers/mystwarr.c
+++ b/src/mame/drivers/mystwarr.c
@@ -1410,8 +1410,8 @@ ROM_END
 ROM_START( viostormab )
 	/* main program */
 	ROM_REGION( 0x200000, "maincpu", 0 )
-	ROM_LOAD16_BYTE( "168aab02.15h", 0x000001, 0x80000, CRC(14f78423) SHA1(13a44e13b9dc1e31e8268485cded3385a84e3482) )
-	ROM_LOAD16_BYTE( "168aab01.15f", 0x000000, 0x80000, CRC(3dd1cc83) SHA1(f0d289912994a5dbfc0711fe9aa0a2969f7f8d8e) )
+	ROM_LOAD16_BYTE( "168aab01.15h", 0x000001, 0x80000, CRC(14f78423) SHA1(13a44e13b9dc1e31e8268485cded3385a84e3482) )
+	ROM_LOAD16_BYTE( "168aab02.15f", 0x000000, 0x80000, CRC(3dd1cc83) SHA1(f0d289912994a5dbfc0711fe9aa0a2969f7f8d8e) )
 
 	/* sound program */
 	ROM_REGION( 0x030000, "soundcpu", 0 )