--- a/src/devices/wifi/wifi-net-device.cc	Thu Apr 10 11:11:34 2008 -0700
+++ b/src/devices/wifi/wifi-net-device.cc	Thu Apr 10 11:11:55 2008 -0700
@@ -31,6 +31,8 @@
 
 namespace ns3 {
 
+NS_OBJECT_ENSURE_REGISTERED (WifiNetDevice);
+
 TypeId 
 WifiNetDevice::GetTypeId (void)
 {