diff --git a/libraries/AP_ADSB/AP_ADSB.h b/libraries/AP_ADSB/AP_ADSB.h
index ddacc0d76b..11353f08fb 100644
--- a/libraries/AP_ADSB/AP_ADSB.h
+++ b/libraries/AP_ADSB/AP_ADSB.h
@@ -97,7 +97,7 @@ public:
     void set_is_auto_mode(const bool is_in_auto_mode) { out_state.is_in_auto_mode = is_in_auto_mode; }
     void set_is_flying(const bool is_flying) { out_state.is_flying = is_flying; }
 
-    UAVIONIX_ADSB_RF_HEALTH get_transceiver_status(void) { return out_state.status; }
+    UAVIONIX_ADSB_RF_HEALTH get_transceiver_status(void) const { return out_state.status; }
 
     // extract a location out of a vehicle item
     Location get_location(const adsb_vehicle_t &vehicle) const;