diff --git a/include/Mw/MachDep.h b/include/Mw/MachDep.h
index be0529a..a3d0098 100644
--- a/include/Mw/MachDep.h
+++ b/include/Mw/MachDep.h
@@ -18,6 +18,25 @@
 #include <time.h>
 #ifdef _WIN32
 #include <direct.h>
+
+#ifdef _MILSKO
+#include <windows.h>
+#ifndef GWLP_USERDATA
+#define GWLP_USERDATA GWL_USERDATA
+#define GWLP_WNDPROC GWL_WNDPROC
+#define GCLP_HICON GCL_HICON
+#define GCLP_HCURSOR GCL_HCURSOR
+#define SetWindowLongPtr SetWindowLong
+#define GetWindowLongPtr GetWindowLong
+#define SetClassLongPtr SetClassLong
+#define GetClassLongPtr GetClassLong
+#endif
+#ifndef WM_MOUSEWHEEL
+#define WM_MOUSEWHEEL 0x020a
+#define GET_WHEEL_DELTA_WPARAM(x) ((short)HIWORD(x))
+#endif
+#endif
+
 #else
 #include <unistd.h>
 #include <pwd.h>
diff --git a/src/backend/gdi.h b/src/backend/gdi.h
index fabe529..b98e6f3 100644
--- a/src/backend/gdi.h
+++ b/src/backend/gdi.h
@@ -6,22 +6,6 @@
 #include <Mw/TypeDefs.h>
 #include <Mw/LowLevel.h>
 
-#include <windows.h>
-#ifndef GWLP_USERDATA
-#define GWLP_USERDATA GWL_USERDATA
-#define GWLP_WNDPROC GWL_WNDPROC
-#define GCLP_HICON GCL_HICON
-#define GCLP_HCURSOR GCL_HCURSOR
-#define SetWindowLongPtr SetWindowLong
-#define GetWindowLongPtr GetWindowLong
-#define SetClassLongPtr SetClassLong
-#define GetClassLongPtr GetClassLong
-#endif
-#ifndef WM_MOUSEWHEEL
-#define WM_MOUSEWHEEL 0x020a
-#define GET_WHEEL_DELTA_WPARAM(x) ((short)HIWORD(x))
-#endif
-
 struct _MwLLGDI {
 	struct _MwLLCommon common;