--- a/src/devices/wifi/edca-txop-n.h	Fri Jan 08 18:04:01 2010 +0100
+++ b/src/devices/wifi/edca-txop-n.h	Mon Jan 11 12:23:09 2010 +0300
@@ -132,6 +132,7 @@
   void SetMsduAggregator (Ptr<MsduAggregator> aggr);
 
 private:
+  void DoStart ();
   /**
    * This functions are used only to correctly set addresses in a-msdu subframe.
    * If aggregating sta is a STA (in an infrastructured network):