diff --git a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/NROM.cs b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/NROM.cs
index bb15b521b4..a6885781a9 100644
--- a/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/NROM.cs
+++ b/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/NROM.cs
@@ -19,6 +19,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 			{
 				case "MAPPER000":
 					break;
+				case "MAPPER000_VS":
+					// I thibnk this is only for bad/pirated dumps of VS games.
+					// No VS game used mapper zero but some were changed to use noraml CHR mapping I think
+					NES._isVS = true;
+					break;
 				case "BANDAI-NROM-128":
 				case "BANDAI-NROM-256":
 				case "HVC-HROM": //Donkey Kong Jr. (J)