--- a/src/devices/wifi/wifi-net-device.cc	Sat Mar 15 22:27:35 2008 +0100
+++ b/src/devices/wifi/wifi-net-device.cc	Sat Mar 15 22:27:42 2008 +0100
@@ -74,6 +74,7 @@
   m_stationManager->Dispose ();
   m_mac = 0;
   m_phy = 0;
+  m_channel = 0;
   m_stationManager = 0;
   // chain up.
   NetDevice::DoDispose ();