--- a/src/devices/wifi/wifi-phy.h	Wed Oct 31 11:45:04 2007 +0100
+++ b/src/devices/wifi/wifi-phy.h	Wed Oct 31 12:05:25 2007 +0100
@@ -27,6 +27,7 @@
 #include "ns3/callback.h"
 #include "ns3/event-id.h"
 #include "ns3/packet.h"
+#include "ns3/object.h"
 #include "ns3/callback-trace-source.h"
 #include "ns3/nstime.h"
 #include "ns3/ptr.h"
@@ -68,7 +69,7 @@
 
 
 
-class WifiPhy
+class WifiPhy : public Object
 {
 public:
   typedef Callback<void,Packet, double, WifiMode, enum WifiPreamble> SyncOkCallback;