--- a/src/devices/wifi/dca-txop.h	Wed Oct 31 11:45:04 2007 +0100
+++ b/src/devices/wifi/dca-txop.h	Wed Oct 31 12:05:25 2007 +0100
@@ -48,7 +48,7 @@
   ~DcaTxop ();
 
   void SetLow (MacLow *low);
-  void SetPhy (WifiPhy *phy);
+  void SetPhy (Ptr<WifiPhy> phy);
   void SetParameters (MacParameters *parameters);
   void SetTxMiddle (MacTxMiddle *txMiddle);
   void SetTxOkCallback (TxOk callback);