diff --git a/ArduPlane/GCS_Mavlink.cpp b/ArduPlane/GCS_Mavlink.cpp
index ae0265985b..cec0961bd6 100644
--- a/ArduPlane/GCS_Mavlink.cpp
+++ b/ArduPlane/GCS_Mavlink.cpp
@@ -855,12 +855,10 @@ bool GCS_MAVLINK_Plane::try_send_message(enum ap_message id)
         break;
 
     case MSG_MAG_CAL_PROGRESS:
-        CHECK_PAYLOAD_SIZE(MAG_CAL_PROGRESS);
         plane.compass.send_mag_cal_progress(chan);
         break;
 
     case MSG_MAG_CAL_REPORT:
-        CHECK_PAYLOAD_SIZE(MAG_CAL_REPORT);
         plane.compass.send_mag_cal_report(chan);
         break;