diff -Naur inetutils-1.5.orig/libicmp/icmp_timestamp.c inetutils-1.5/libicmp/icmp_timestamp.c
--- inetutils-1.5.orig/libicmp/icmp_timestamp.c	2008-08-03 08:40:42.000000000 +0000
+++ inetutils-1.5/libicmp/icmp_timestamp.c	2008-08-03 08:41:40.000000000 +0000
@@ -33,6 +33,8 @@
 #include <arpa/inet.h>
 #include <icmp.h>
 
+#include <stdlib.h>
+
 int
 icmp_timestamp_encode (u_char *buffer, size_t bufsize, int ident, int seqno)
 {