diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp
index 7a90a824da..479a577806 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_Outputs.cpp
@@ -535,7 +535,7 @@ void NavEKF2_core::send_status_report(mavlink_channel_t chan)
     getVariances(velVar, posVar, hgtVar, magVar, tasVar, offset);
 
     // send message
-    mavlink_msg_ekf_status_report_send(chan, flags, velVar, posVar, hgtVar, magVar.length(), tasVar);
+    mavlink_msg_ekf_status_report_send(chan, flags, velVar, posVar, hgtVar, magVar.length(), sqrtf(auxRngTestRatio));
 
 }