diff --git a/hw/xwin/ddraw.h b/hw/xwin/ddraw.h
index 9463049c8..1871d9551 100644
--- a/hw/xwin/ddraw.h
+++ b/hw/xwin/ddraw.h
@@ -1,3 +1,7 @@
+#ifdef __MINGW64_VERSION_MAJOR
+#include_next <ddraw.h>
+#define __XWIN_DDRAW_H
+#endif
 #ifndef __XWIN_DDRAW_H
 #define __XWIN_DDRAW_H
 
diff --git a/hw/xwin/win.h b/hw/xwin/win.h
index 7b34e84d9..6c524f909 100644
--- a/hw/xwin/win.h
+++ b/hw/xwin/win.h
@@ -133,6 +133,8 @@
 
 #define WIN_MAX_KEYS_PER_KEY	4
 
+#define NONAMELESSUNION
+
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <stdio.h>
diff --git a/hw/xwin/winms.h b/hw/xwin/winms.h
index 5282fc982..32923e503 100644
--- a/hw/xwin/winms.h
+++ b/hw/xwin/winms.h
@@ -30,7 +30,6 @@
  * Authors:	Harold L Hunt II
  */
 
-#define NONAMELESSUNION
 #define DIRECTDRAW_VERSION	0x0300
 #ifndef WIN32_LEAN_AND_MEAN
 #define WIN32_LEAN_AND_MEAN