diff -Naur Lrzip.h.orig Lrzip.h
--- a/Lrzip.h	2013-11-30 20:07:27.343086997 +0000
+++ b/Lrzip.h	2013-11-30 20:07:44.072641056 +0000
@@ -22,6 +22,7 @@
 
 #include <stdbool.h>
 #include <stdio.h>
+#include <stdarg.h>
 #ifdef _WIN32
 # include <stddef.h>
 #else