--- a/examples/wireless/mixed-wireless.cc	Wed Mar 02 13:42:28 2011 -0800
+++ b/examples/wireless/mixed-wireless.cc	Thu Mar 03 19:54:57 2011 +0000
@@ -67,6 +67,7 @@
 #include "ns3/mobility-module.h"
 #include "ns3/contrib-module.h"
 #include "ns3/wifi-module.h"
+#include "ns3/csma-module.h"
 #include "ns3/olsr-helper.h"
 #include "ns3/ipv4-global-routing-helper.h"