diff --git a/src/mame/drivers/cybstorm.cpp b/src/mame/drivers/cybstorm.cpp
index ecfe046f29d..484aed51582 100755
--- a/src/mame/drivers/cybstorm.cpp
+++ b/src/mame/drivers/cybstorm.cpp
@@ -330,7 +330,7 @@ ROM_START( cybstorm )
 	ROM_LOAD( "st_11.22.mo13",0x680000, 0x080000, CRC(8ec4cc3e) SHA1(20e74ce2aa60cd2eb67a39b1bd8cf37454db4776) )
 	ROM_LOAD( "st_11.22.mo14",0x880000, 0x080000, CRC(8f144f42) SHA1(6a35cf399775aaae50eeb35812fcf1343d9f9e1a) )
 	ROM_LOAD( "st_11.22.mo15",0xa80000, 0x080000, CRC(3de4035a) SHA1(ecba9b464eb8b37a85a1c81ee4d7935a11646ed9) )
-	ROM_LOAD( "st_11.22.mo20",0x180000, 0x080000, CRC(6f79ef90) SHA1(e323a7c35dac021c6b32870938dd54e865014078) )
+	ROM_LOAD( "st_11.22.mo20",0x100000, 0x080000, CRC(6f79ef90) SHA1(e323a7c35dac021c6b32870938dd54e865014078) )
 	ROM_LOAD( "st_11.22.mo21",0x300000, 0x080000, CRC(69726b74) SHA1(31ba5ac1584ba6b63ec4a2189d531319db716690) )
 	ROM_LOAD( "st_11.22.mo22",0x500000, 0x080000, CRC(5323d1f4) SHA1(65e81316467a3e5413ef480ba278a0a70e5c2f51) )
 	ROM_LOAD( "st_11.22.mo23",0x700000, 0x080000, CRC(2387c947) SHA1(26d0f1ee83c5e84df4d143d6d3fd422f34d0d9af) )