--- contrib/python/psutil/py3/psutil/arch/windows/disk.c	(index)
+++ contrib/python/psutil/py3/psutil/arch/windows/disk.c	(working tree)
@@ -7,6 +7,7 @@
 #include <Python.h>
 #include <windows.h>
 #include <tchar.h>
+#include <winioctl.h>
 
 #include "../../_psutil_common.h"