--- kbd-2.0.1.orig/src/dumpkeys.c	2013-08-27 22:45:33.000000000 +0200
+++ kbd-2.0.1/src/dumpkeys.c	2014-03-24 22:38:21.000000000 +0100
@@ -3,6 +3,8 @@
  *
  * derived from version 0.81 - aeb@cwi.nl
  */
+
+#include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <ctype.h>