diff --git a/ArduSub/GCS_Mavlink.cpp b/ArduSub/GCS_Mavlink.cpp
index 00b24df989..a9d3792873 100644
--- a/ArduSub/GCS_Mavlink.cpp
+++ b/ArduSub/GCS_Mavlink.cpp
@@ -293,14 +293,6 @@ void NOINLINE Sub::send_simstate(mavlink_channel_t chan)
 #endif
 }
 
-void NOINLINE Sub::send_hwstatus(mavlink_channel_t chan)
-{
-    mavlink_msg_hwstatus_send(
-        chan,
-        hal.analogin->board_voltage()*1000,
-        0);
-}
-
 void NOINLINE Sub::send_radio_out(mavlink_channel_t chan)
 {
     mavlink_msg_servo_output_raw_send(
@@ -585,11 +577,6 @@ bool GCS_MAVLINK_Sub::try_send_message(enum ap_message id)
         send_ahrs2(sub.ahrs);
         break;
 
-    case MSG_HWSTATUS:
-        CHECK_PAYLOAD_SIZE(HWSTATUS);
-        sub.send_hwstatus(chan);
-        break;
-
     case MSG_MOUNT_STATUS:
 #if MOUNT == ENABLED
         CHECK_PAYLOAD_SIZE(MOUNT_STATUS);
diff --git a/ArduSub/Sub.h b/ArduSub/Sub.h
index 2cf46f0d80..53a61f442d 100644
--- a/ArduSub/Sub.h
+++ b/ArduSub/Sub.h
@@ -483,7 +483,6 @@ private:
     void send_location(mavlink_channel_t chan);
     void send_nav_controller_output(mavlink_channel_t chan);
     void send_simstate(mavlink_channel_t chan);
-    void send_hwstatus(mavlink_channel_t chan);
     void send_radio_out(mavlink_channel_t chan);
     void send_vfr_hud(mavlink_channel_t chan);
 #if RPM_ENABLED == ENABLED