--- a/examples/mixed-wireless.cc	Tue May 13 01:04:42 2008 +0100
+++ b/examples/mixed-wireless.cc	Wed May 14 19:24:17 2008 -0400
@@ -268,7 +268,6 @@
         {
           subnetAlloc->Add (Vector (0.0, j, 0.0));
         }
-      mobility.EnableNotifier ();
       mobility.PushReferenceMobilityModel (backbone.Get (i));
       mobility.SetPositionAllocator (subnetAlloc);
       mobility.SetMobilityModel ("ns3::RandomDirection2dMobilityModel",
@@ -344,7 +343,7 @@
   CsmaHelper::EnablePcap ("mixed-wireless.pcap", appSink->GetId (), 0);
 
 #ifdef ENABLE_FOR_TRACING_EXAMPLE
-  Config::Connect ("/NodeList/*/$MobilityModelNotifier/CourseChange",
+  Config::Connect ("/NodeList/*/$MobilityModel/CourseChange",
     MakeCallback (&CourseChangeCallback));
 #endif