diff --git a/BizHawk.Emulation.Common/Database/FirmwareDatabase.cs b/BizHawk.Emulation.Common/Database/FirmwareDatabase.cs
index 4640ef57c0..e739fc9cda 100644
--- a/BizHawk.Emulation.Common/Database/FirmwareDatabase.cs
+++ b/BizHawk.Emulation.Common/Database/FirmwareDatabase.cs
@@ -69,6 +69,8 @@ namespace BizHawk.Emulation.Common
 			// MSX
 			FirmwareAndOption("B398CFCB94C9F7E808E0FECE54813CFDFB96F8D0", 16384, "MSX", "bios_test", "msx_bios.rom", "MSX BIOS");
 			FirmwareAndOption("18559FA9C2D9E99A319550D809009ECDBA6D396E", 16384, "MSX", "basic_test", "msx_basic.rom", "MSX BASIC");
+			FirmwareAndOption("2F997E8A57528518C82AB3693FDAE243DBBCC508", 32768, "MSX", "bios_test_ext", "msx_bios.rom", "MSX BIOS");
+			
 
 			FirmwareAndOption("E998F0C441F4F1800EF44E42CD1659150206CF79", 16384, "MSX", "bios_pal", "msx_bios.rom", "MSX BIOS");
 			FirmwareAndOption("DF48902F5F12AF8867AE1A87F255145F0E5E0774", 16384, "MSX", "bios_jp", "msx_bios.rom", "MSX BIOS");
diff --git a/BizHawk.Emulation.Cores/Computers/MSX/MSX.cs b/BizHawk.Emulation.Cores/Computers/MSX/MSX.cs
index 2f3007c817..4cd1456ad5 100644
--- a/BizHawk.Emulation.Cores/Computers/MSX/MSX.cs
+++ b/BizHawk.Emulation.Cores/Computers/MSX/MSX.cs
@@ -60,7 +60,7 @@ namespace BizHawk.Emulation.Cores.Computers.MSX
 
 			Bios = comm.CoreFileProvider.GetFirmware("MSX", "bios_jp", false, "BIOS Not Found, Cannot Load");
 
-			if (Bios == null) { Bios = comm.CoreFileProvider.GetFirmware("MSX", "bios_test", true, "BIOS Not Found, Cannot Load"); }
+			if (Bios == null) { Bios = comm.CoreFileProvider.GetFirmware("MSX", "bios_test_ext", true, "BIOS Not Found, Cannot Load"); }
 			//Basic = comm.CoreFileProvider.GetFirmware("MSX", "basic_test", true, "BIOS Not Found, Cannot Load");