diff --git a/src/devices/wifi/wifi-net-device.cc b/src/devices/wifi/wifi-net-device.cc
index 717f313a6..2dfd04666 100644
--- a/src/devices/wifi/wifi-net-device.cc
+++ b/src/devices/wifi/wifi-net-device.cc
@@ -31,6 +31,8 @@
 
 namespace ns3 {
 
+NS_OBJECT_ENSURE_REGISTERED (WifiNetDevice);
+
 TypeId 
 WifiNetDevice::GetTypeId (void)
 {