--- a/src/bridge/model/bridge-net-device.cc	Fri Mar 27 08:19:31 2015 -0700
+++ b/src/bridge/model/bridge-net-device.cc	Fri Mar 27 09:12:25 2015 -0700
@@ -36,6 +36,7 @@
 {
   static TypeId tid = TypeId ("ns3::BridgeNetDevice")
     .SetParent<NetDevice> ()
+    .SetGroupName("Bridge")
     .AddConstructor<BridgeNetDevice> ()
     .AddAttribute ("Mtu", "The MAC-level Maximum Transmission Unit",
                    UintegerValue (1500),