diff -up ntp-4.2.8p8/sntp/main.c.orig ntp-4.2.8p8/sntp/main.c
--- ntp-4.2.8p8/sntp/main.c.orig	2016-10-19 10:18:41.690800420 +0200
+++ ntp-4.2.8p8/sntp/main.c	2016-10-19 10:19:31.900966925 +0200
@@ -8,6 +8,10 @@
 # include <event2/thread.h>
 #endif
 
+#ifdef HAVE_SYSEXITS_H
+#include <sysexits.h>
+#endif
+
 #include "main.h"
 #include "ntp_libopts.h"
 #include "kod_management.h"