--- a/src/devices/wifi/dca-txop.h	Fri Apr 24 09:16:28 2009 +0200
+++ b/src/devices/wifi/dca-txop.h	Fri Apr 24 09:57:16 2009 +0200
@@ -115,6 +115,9 @@
   friend class TransmissionListener;
   friend class WifiRemoteStation;
 
+  DcaTxop &operator = (const DcaTxop &);
+  DcaTxop (const DcaTxop &o);
+
   // Inherited from ns3::Object
   Ptr<MacLow> Low (void);