diff --git a/src/devices/mesh/dot11s/airtime-metric.cc b/src/devices/mesh/dot11s/airtime-metric.cc
index 360d67313..f05272906 100644
--- a/src/devices/mesh/dot11s/airtime-metric.cc
+++ b/src/devices/mesh/dot11s/airtime-metric.cc
@@ -23,6 +23,7 @@
 #include "ns3/wifi-mode.h"
 namespace ns3 {
 namespace dot11s {
+NS_OBJECT_ENSURE_REGISTERED (AirtimeLinkMetricCalculator);
 TypeId
 AirtimeLinkMetricCalculator::GetTypeId ()
 {