diff --git a/src/node/simple-net-device.cc b/src/node/simple-net-device.cc
index 43d57b643..82fda974d 100644
--- a/src/node/simple-net-device.cc
+++ b/src/node/simple-net-device.cc
@@ -153,6 +153,14 @@ SimpleNetDevice::SetReceiveCallback (NetDevice::ReceiveCallback cb)
   m_rxCallback = cb;
 }
 
+void
+SimpleNetDevice::DoDispose (void)
+{
+  m_channel = 0;
+  m_node = 0;
+  NetDevice::DoDispose ();
+}
+
 
 
 } // namespace ns3
diff --git a/src/node/simple-net-device.h b/src/node/simple-net-device.h
index 76f3d6b82..ddb85694a 100644
--- a/src/node/simple-net-device.h
+++ b/src/node/simple-net-device.h
@@ -44,6 +44,8 @@ public:
   virtual bool NeedsArp (void) const;
   virtual void SetReceiveCallback (NetDevice::ReceiveCallback cb);
 
+protected:
+  virtual void DoDispose (void);
 private:
   Ptr<SimpleChannel> m_channel;
   NetDevice::ReceiveCallback m_rxCallback;