--- OLD/xc/lib/Xi/XExtToWire.c	Thu Jan  1 00:00:00 1970
+++ NEW/xc/lib/Xi/XExtToWire.c	Thu Jan  1 00:00:00 1970
@@ -54,6 +54,7 @@
 #include "XInput.h"
 #include "XIproto.h"
 #include "extutil.h"
+#include "XIint.h"
 
 Status
 _XiEventToWire(dpy, re, event, count)