--- xorg-server-1.20.1.orig/hw/xwin/propertystore.h	2018-08-07 18:31:04.000000000 +0200
+++ xorg-server-1.20.1/hw/xwin/propertystore.h	2018-08-26 00:11:27.888563954 +0200
@@ -26,7 +26,7 @@
 
 #include <windows.h>
 
-#ifdef __MINGW64_VERSION_MAJOR
+#if defined(__MINGW64_VERSION_MAJOR) || defined(__midipix__)
 /* If we are using headers from mingw-w64 project, it provides the PSDK headers this needs ... */
 #include <propkey.h>
 #include <propsys.h>