diff --git a/src/devices/wifi/edca-txop-n.h b/src/devices/wifi/edca-txop-n.h
index 497871b61..a89b5292d 100644
--- a/src/devices/wifi/edca-txop-n.h
+++ b/src/devices/wifi/edca-txop-n.h
@@ -138,6 +138,8 @@ private:
    */
   Mac48Address MapSrcAddressForAggregation (WifiMacHeader const &hdr);
   Mac48Address MapDestAddressForAggregation (WifiMacHeader const &hdr);
+  EdcaTxopN &operator = (const EdcaTxopN &);
+  EdcaTxopN (const EdcaTxopN &);
   
   class Dcf;
   class TransmissionListener;
diff --git a/src/devices/wifi/qadhoc-wifi-mac.h b/src/devices/wifi/qadhoc-wifi-mac.h
index 52573c46d..a5b16a3f1 100644
--- a/src/devices/wifi/qadhoc-wifi-mac.h
+++ b/src/devices/wifi/qadhoc-wifi-mac.h
@@ -79,6 +79,8 @@ private:
   virtual void DoDispose (void);
   void Receive (Ptr<Packet> packet, WifiMacHeader const *hdr);
   void ForwardUp (Ptr<Packet> packet, Mac48Address from, Mac48Address to);
+  QadhocWifiMac &operator = (const QadhocWifiMac &);
+  QadhocWifiMac (const QadhocWifiMac &);
 
   /**
   * When an A-MSDU is received, is deaggregated by this method and all extracted packets are
diff --git a/src/devices/wifi/qap-wifi-mac.h b/src/devices/wifi/qap-wifi-mac.h
index 063c5a6ad..5ae25dc3c 100644
--- a/src/devices/wifi/qap-wifi-mac.h
+++ b/src/devices/wifi/qap-wifi-mac.h
@@ -104,6 +104,8 @@ private:
   bool GetBeaconGeneration (void) const;
   
   void DeaggregateAmsduAndForward (Ptr<Packet> aggregatedPacket, WifiMacHeader const *hdr);
+  QapWifiMac &operator = (const QapWifiMac &);
+  QapWifiMac (const QapWifiMac &);
 
   typedef std::map<AccessClass, Ptr<EdcaTxopN> > Queues;
   typedef std::list<std::pair<Ptr<Packet>, AmsduSubframeHeader> > DeaggregatedMsdus;
diff --git a/src/devices/wifi/qsta-wifi-mac.h b/src/devices/wifi/qsta-wifi-mac.h
index 68edb913d..7e7a1661e 100644
--- a/src/devices/wifi/qsta-wifi-mac.h
+++ b/src/devices/wifi/qsta-wifi-mac.h
@@ -120,6 +120,9 @@ private:
   void SetBEQueue (Ptr<EdcaTxopN> beQueue);
   void SetBKQueue (Ptr<EdcaTxopN> bkQueue);
 
+  QstaWifiMac &operator = (const QstaWifiMac &);
+  QstaWifiMac (const QstaWifiMac &);
+
   typedef std::map<AccessClass, Ptr<EdcaTxopN> > Queues;
   typedef std::list<std::pair<Ptr<Packet>, AmsduSubframeHeader> > DeaggregatedMsdus;
   typedef std::list<std::pair<Ptr<Packet>, AmsduSubframeHeader> >::const_iterator DeaggregatedMsdusCI;