diff -ru tcptrack-1.2.0~/src/util.cc tcptrack-1.2.0/src/util.cc
--- tcptrack-1.2.0~/src/util.cc	2008-03-31 19:57:17.000000000 +0200
+++ tcptrack-1.2.0/src/util.cc	2008-03-31 19:57:38.000000000 +0200
@@ -21,6 +21,7 @@
  */
 #include "util.h"
 #include <stdio.h>
+#include <string.h>
 #include "headers.h"
 #ifdef HAVE_HASH_MAP
 # include <hash_map>