diff --git a/ArduCopter/GCS_Mavlink.cpp b/ArduCopter/GCS_Mavlink.cpp
index fdfdcdd684..de24cc0af9 100644
--- a/ArduCopter/GCS_Mavlink.cpp
+++ b/ArduCopter/GCS_Mavlink.cpp
@@ -268,11 +268,6 @@ bool GCS_MAVLINK_Copter::try_send_message(enum ap_message id)
         // unused
         break;
 
-    case MSG_PID_TUNING:
-        CHECK_PAYLOAD_SIZE(PID_TUNING);
-        send_pid_tuning();
-        break;
-
     case MSG_ADSB_VEHICLE:
 #if ADSB_ENABLED == ENABLED
         CHECK_PAYLOAD_SIZE(ADSB_VEHICLE);
diff --git a/ArduCopter/GCS_Mavlink.h b/ArduCopter/GCS_Mavlink.h
index 631d0b72ff..04dc9e1060 100644
--- a/ArduCopter/GCS_Mavlink.h
+++ b/ArduCopter/GCS_Mavlink.h
@@ -64,6 +64,6 @@ private:
     int16_t vfr_hud_throttle() const override;
     float vfr_hud_alt() const override;
 
-    void send_pid_tuning();
+    void send_pid_tuning() override;
 
 };