--- a/src/simulator/ns2-calendar-scheduler.cc	Fri Jan 16 08:58:17 2009 +0100
+++ b/src/simulator/ns2-calendar-scheduler.cc	Fri Jan 16 09:06:59 2009 +0100
@@ -24,6 +24,7 @@
 #include "ns3/log.h"
 #include <cassert>
 #include <math.h>
+#include <string.h>
 
 namespace ns3 {