--- a/src/devices/wifi/wifi-mac-queue.cc	Thu May 28 18:19:51 2009 +0200
+++ b/src/devices/wifi/wifi-mac-queue.cc	Thu May 28 18:21:05 2009 +0200
@@ -32,7 +32,7 @@
 NS_OBJECT_ENSURE_REGISTERED (WifiMacQueue);
 
 WifiMacQueue::Item::Item (Ptr<const Packet> packet, 
-                          WifiMacHeader const &hdr, 
+                          const WifiMacHeader &hdr, 
                           Time tstamp)
   : packet (packet), hdr (hdr), tstamp (tstamp)
 {}
@@ -89,7 +89,7 @@
 }
 
 void 
-WifiMacQueue::Enqueue (Ptr<const Packet> packet, WifiMacHeader const &hdr)
+WifiMacQueue::Enqueue (Ptr<const Packet> packet, const WifiMacHeader &hdr)
 {
   Cleanup ();
   if (m_size == m_maxSize) 

--- a/src/devices/wifi/wifi-mac-queue.h	Thu May 28 18:19:51 2009 +0200
+++ b/src/devices/wifi/wifi-mac-queue.h	Thu May 28 18:21:05 2009 +0200
@@ -60,7 +60,7 @@
   uint32_t GetMaxSize (void) const;
   Time GetMaxDelay (void) const;
 
-  void Enqueue (Ptr<const Packet> packet, WifiMacHeader const &hdr);
+  void Enqueue (Ptr<const Packet> packet, const WifiMacHeader &hdr);
   Ptr<const Packet> Dequeue (WifiMacHeader *hdr);
   Ptr<const Packet> Peek (WifiMacHeader *hdr);
   /**
@@ -109,7 +109,7 @@
   
   struct Item {
     Item (Ptr<const Packet> packet, 
-          WifiMacHeader const &hdr, 
+          const WifiMacHeader &hdr, 
           Time tstamp);
     Ptr<const Packet> packet;
     WifiMacHeader hdr;