diff --git a/BizHawk.MultiClient/LuaInterface.dll b/BizHawk.MultiClient/LuaInterface.dll
index 30fabf940d..bbb16a4224 100644
Binary files a/BizHawk.MultiClient/LuaInterface.dll and b/BizHawk.MultiClient/LuaInterface.dll differ
diff --git a/BizHawk.MultiClient/lua51.dll b/BizHawk.MultiClient/lua51.dll
index 80166c7e51..62393ca2aa 100644
Binary files a/BizHawk.MultiClient/lua51.dll and b/BizHawk.MultiClient/lua51.dll differ
diff --git a/LuaInterface/Lua/src/LuaDLL.cpp b/LuaInterface/Lua/src/LuaDLL.cpp
index 293cd44a7e..7093284948 100644
--- a/LuaInterface/Lua/src/LuaDLL.cpp
+++ b/LuaInterface/Lua/src/LuaDLL.cpp
@@ -127,9 +127,11 @@ namespace Lua511
 	/*
 	 * Delegate for functions passed to Lua as function pointers
 	 */
+	[System::Runtime::InteropServices::UnmanagedFunctionPointer(CallingConvention::Cdecl)]
 	public delegate int LuaCSFunction(IntPtr luaState);
 
    // delegate for lua debug hook callback (by Reinhard Ostermeier)
+	[System::Runtime::InteropServices::UnmanagedFunctionPointer(CallingConvention::Cdecl)]
    public delegate void LuaHookFunction(IntPtr luaState, IntPtr luaDebug);