diff --git a/ArduCopter/compassmot.cpp b/ArduCopter/compassmot.cpp
index 4c77f95c47..6860477fce 100644
--- a/ArduCopter/compassmot.cpp
+++ b/ArduCopter/compassmot.cpp
@@ -9,7 +9,7 @@ MAV_RESULT Copter::mavlink_compassmot(mavlink_channel_t chan)
 {
 #if FRAME_CONFIG == HELI_FRAME
     // compassmot not implemented for tradheli
-    return MAV_RESULT_TEMPORARILY_REJECTED;
+    return MAV_RESULT_UNSUPPORTED;
 #else
     int8_t   comp_type;                 // throttle or current based compensation
     Vector3f compass_base[COMPASS_MAX_INSTANCES];           // compass vector when throttle is zero