--- a/src/wifi/model/wifi-mac-queue.h	Mon Dec 02 23:02:39 2013 +0100
+++ b/src/wifi/model/wifi-mac-queue.h	Tue Dec 03 11:25:59 2013 -0800
@@ -30,8 +30,6 @@
 #include "wifi-mac-header.h"
 
 namespace ns3 {
-
-class WifiMacParameters;
 class QosBlockedDestinations;
 
 /**
@@ -120,14 +118,15 @@
 
   bool IsEmpty (void);
   uint32_t GetSize (void);
-private:
+protected:
+  virtual void Cleanup (void);
+
   struct Item;
 
   typedef std::list<struct Item> PacketQueue;
   typedef std::list<struct Item>::reverse_iterator PacketQueueRI;
   typedef std::list<struct Item>::iterator PacketQueueI;
 
-  void Cleanup (void);
   Mac48Address GetAddressForPacket (enum WifiMacHeader::AddressType type, PacketQueueI);
 
   struct Item