--- a/samples/main-adhoc-wifi.cc	Wed Jan 02 09:09:24 2008 +0100
+++ b/samples/main-adhoc-wifi.cc	Wed Jan 02 09:25:31 2008 +0100
@@ -58,14 +58,14 @@
 static void
 SetPosition (Ptr<Node> node, Vector position)
 {
-  Ptr<MobilityModel> mobility = node->QueryInterface<MobilityModel> (MobilityModel::iid);
+  Ptr<MobilityModel> mobility = node->QueryInterface<MobilityModel> ();
   mobility->SetPosition (position);
 }
 
 static Vector
 GetPosition (Ptr<Node> node)
 {
-  Ptr<MobilityModel> mobility = node->QueryInterface<MobilityModel> (MobilityModel::iid);
+  Ptr<MobilityModel> mobility = node->QueryInterface<MobilityModel> ();
   return mobility->GetPosition ();
 }