diff --git a/reactos/tools/wmc/windows.h b/reactos/tools/wmc/windows.h
deleted file mode 100644
index 0c8a7d4b6f8..00000000000
--- a/reactos/tools/wmc/windows.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#include <wchar.h>
-typedef wchar_t WCHAR;
-typedef unsigned short int WORD;
-typedef unsigned int UINT;
-typedef unsigned int DWORD;
-typedef char CHAR;
-typedef CHAR *LPSTR;
-typedef WCHAR *LPWSTR;
-typedef const CHAR *LPCSTR;
-typedef const WCHAR *LPCWSTR;
-typedef unsigned int *LPBOOL;
-
-#ifndef __unix__
-#define STDCALL __attribute__((stdcall))
-#else
-#define STDCALL
-#endif
-
-int STDCALL MultiByteToWideChar(
-  UINT CodePage,
-  DWORD dwFlags,
-  LPCSTR lpMultiByteStr,
-  int cbMultiByte,
-  LPWSTR lpWideCharStr,
-  int cchWideChar);
-
-int STDCALL WideCharToMultiByte(
-  UINT CodePage,
-  DWORD dwFlags,
-  LPCWSTR lpWideCharStr,
-  int cchWideChar,
-  LPSTR lpMultiByteStr,
-  int cbMultiByte,
-  LPCSTR lpDefaultChar,
-  LPBOOL lpUsedDefaultChar);