diff --git a/src/mame/drivers/taitogn.cpp b/src/mame/drivers/taitogn.cpp
index 09721eb3f00..da9d37c0de2 100644
--- a/src/mame/drivers/taitogn.cpp
+++ b/src/mame/drivers/taitogn.cpp
@@ -852,7 +852,7 @@ INPUT_PORTS_END
 	ROM_LOAD( "coh-3002t.353", 0x000000, 0x080000, CRC(03967fa7) SHA1(0e17fec2286e4e25deb23d40e41ce0986f373d49) ) \
 	ROM_REGION( 0x2000, "mcu", 0 ) \
 	ROM_LOAD( "upd78081.655", 0x0000, 0x2000, NO_DUMP ) /* internal rom :( */ \
-	ROM_REGION( 0x200000, "biosflash", 0 ) \
+	ROM_REGION16_BE( 0x200000, "biosflash", 0 ) \
 	ROM_SYSTEM_BIOS( 0, "v1",   "G-NET Bios v1" ) \
 		ROM_LOAD16_WORD_BIOS(0, "flash.u30", 0x000000, 0x200000, CRC(c48c8236) SHA1(c6dad60266ce2ff635696bc0d91903c543273559) ) \
 	ROM_SYSTEM_BIOS( 1, "v2",   "G-NET Bios v2" ) \