diff --git a/BizHawk.Client.Common/config/Config.cs b/BizHawk.Client.Common/config/Config.cs
index 400f58d87c..e61ffac4bf 100644
--- a/BizHawk.Client.Common/config/Config.cs
+++ b/BizHawk.Client.Common/config/Config.cs
@@ -142,8 +142,15 @@ namespace BizHawk.Client.Common
 		/// </summary>
 		public int FlushSaveRamFrames;
 
-		//check CurrentDomain_AssemblyResolve if you change the defaults or name of this key
-		public bool UseNLua = false; // Whether or not to use a good, reliable, memory-leak-free lua interface that is slower than the original luainterface
+		public enum ELuaEngine
+		{
+			/// <remarks>Don't change this member's ordinal (don't reorder) without changing <c>BizHawk.Client.EmuHawk.Program.CurrentDomain_AssemblyResolve</c></remarks>
+			LuaPlusLuaInterface,
+			NLuaPlusKopiLua
+		}
+
+		/// <remarks>Don't rename this without changing <c>BizHawk.Client.EmuHawk.Program.CurrentDomain_AssemblyResolve</c></remarks>
+		public ELuaEngine LuaEngine = ELuaEngine.LuaPlusLuaInterface;
 
 		public bool TurboSeek { get; set; }
 
diff --git a/BizHawk.Client.EmuHawk/Program.cs b/BizHawk.Client.EmuHawk/Program.cs
index 1cb2f8a395..7e438dad45 100644
--- a/BizHawk.Client.EmuHawk/Program.cs
+++ b/BizHawk.Client.EmuHawk/Program.cs
@@ -318,8 +318,8 @@ namespace BizHawk.Client.EmuHawk
 				var configPath = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "config.ini");
 				if (!EXE_PROJECT.OSTailoredCode.IsUnixHost // LuaInterface is not currently working on Mono
 					&& File.Exists(configPath)
-					&& (Array.Find(File.ReadAllLines(configPath), line => line.Contains("  \"UseNLua\": ")) ?? string.Empty)
-						.Contains("false"))
+					&& (Array.Find(File.ReadAllLines(configPath), line => line.Contains("  \"LuaEngine\": ")) ?? string.Empty)
+						.Contains("0"))
 				{
 					requested = "LuaInterface";
 				}
diff --git a/BizHawk.Client.EmuHawk/config/GuiOptions.cs b/BizHawk.Client.EmuHawk/config/GuiOptions.cs
index 5a38dc3f4d..b24b37d852 100644
--- a/BizHawk.Client.EmuHawk/config/GuiOptions.cs
+++ b/BizHawk.Client.EmuHawk/config/GuiOptions.cs
@@ -64,8 +64,17 @@ namespace BizHawk.Client.EmuHawk
 			cbMoviesOnDisk.Checked = Global.Config.MoviesOnDisk;
 			cbMoviesInAWE.Checked = Global.Config.MoviesInAWE;
 
-			NLuaRadio.Checked = Global.Config.UseNLua;
-			LuaInterfaceRadio.Checked = !Global.Config.UseNLua;
+			switch (Global.Config.LuaEngine)
+			{
+				case Config.ELuaEngine.LuaPlusLuaInterface:
+					LuaInterfaceRadio.Checked = true;
+					break;
+				case Config.ELuaEngine.NLuaPlusKopiLua:
+					NLuaRadio.Checked = true;
+					break;
+				default:
+					throw new ArgumentOutOfRangeException();
+			}
 
 			if (LogConsole.ConsoleVisible)
 			{
@@ -101,13 +110,14 @@ namespace BizHawk.Client.EmuHawk
 			Global.Config.MoviesOnDisk = cbMoviesOnDisk.Checked;
 			Global.Config.MoviesInAWE = cbMoviesInAWE.Checked;
 
-			bool changedLua = Global.Config.UseNLua != NLuaRadio.Checked;
-			Global.Config.UseNLua = NLuaRadio.Checked;
+			var prevLuaEngine = Global.Config.LuaEngine;
+			if (LuaInterfaceRadio.Checked) Global.Config.LuaEngine = Config.ELuaEngine.LuaPlusLuaInterface;
+			else if (NLuaRadio.Checked) Global.Config.LuaEngine = Config.ELuaEngine.NLuaPlusKopiLua;
 
 			Close();
 			DialogResult = DialogResult.OK;
 			GlobalWin.OSD.AddMessage("Custom configurations saved.");
-			if(changedLua) GlobalWin.OSD.AddMessage("Restart emulator for Lua change to take effect");
+			if (prevLuaEngine != Global.Config.LuaEngine) GlobalWin.OSD.AddMessage("Restart emulator for Lua change to take effect");
 		}
 
 		private void CancelBtn_Click(object sender, EventArgs e)