--- a/src/wifi/model/cara-wifi-manager.cc	Fri Mar 27 10:03:43 2015 -0700
+++ b/src/wifi/model/cara-wifi-manager.cc	Fri Mar 27 11:28:59 2015 -0700
@@ -52,6 +52,7 @@
 {
   static TypeId tid = TypeId ("ns3::CaraWifiManager")
     .SetParent<WifiRemoteStationManager> ()
+    .SetGroupName ("Wifi")
     .AddConstructor<CaraWifiManager> ()
     .AddAttribute ("ProbeThreshold",
                    "The number of consecutive transmissions failure to activate the RTS probe.",