diff --git a/AntennaTracker/GCS_Tracker.cpp b/AntennaTracker/GCS_Tracker.cpp
index 378f96949c..8b9dcc5f89 100644
--- a/AntennaTracker/GCS_Tracker.cpp
+++ b/AntennaTracker/GCS_Tracker.cpp
@@ -64,5 +64,7 @@ void GCS_Tracker::update_vehicle_sensor_status_flags()
     }
 }
 
+// avoid building/linking LTM:
+void AP_LTM_Telem::init() {};
 // avoid building/linking Devo:
 void AP_DEVO_Telem::init() {};