--- orig/devcon.h	2018-01-28 13:09:16.053216200 -0400
+++ new/devcon.h	2018-01-28 13:09:24.096011700 -0400
@@ -27,6 +27,7 @@
 #include <strsafe.h>
 #include <io.h>
 #include <fcntl.h>
+#include <driverspecs.h>
 
 #include "msg.h"
 #include "rc_ids.h"