diff --git a/ArduCopter/GCS_Mavlink.cpp b/ArduCopter/GCS_Mavlink.cpp
index b1464b6e76..2fee122927 100644
--- a/ArduCopter/GCS_Mavlink.cpp
+++ b/ArduCopter/GCS_Mavlink.cpp
@@ -645,14 +645,14 @@ void GCS_MAVLINK_Copter::handle_landing_target(const mavlink_landing_target_t &p
 #endif
 }
 
-MAV_RESULT GCS_MAVLINK_Copter::_handle_command_preflight_calibration(const mavlink_command_long_t &packet)
+MAV_RESULT GCS_MAVLINK_Copter::_handle_command_preflight_calibration(const mavlink_command_long_t &packet, const mavlink_message_t &msg)
 {
     if (is_equal(packet.param6,1.0f)) {
         // compassmot calibration
         return copter.mavlink_compassmot(*this);
     }
 
-    return GCS_MAVLINK::_handle_command_preflight_calibration(packet);
+    return GCS_MAVLINK::_handle_command_preflight_calibration(packet, msg);
 }
 
 
diff --git a/ArduCopter/GCS_Mavlink.h b/ArduCopter/GCS_Mavlink.h
index 11e1fc4a62..2c0828aae4 100644
--- a/ArduCopter/GCS_Mavlink.h
+++ b/ArduCopter/GCS_Mavlink.h
@@ -21,7 +21,7 @@ protected:
     bool params_ready() const override;
     void send_banner() override;
 
-    MAV_RESULT _handle_command_preflight_calibration(const mavlink_command_long_t &packet) override;
+    MAV_RESULT _handle_command_preflight_calibration(const mavlink_command_long_t &packet, const mavlink_message_t &msg) override;
 
     void send_attitude_target() override;
     void send_position_target_global_int() override;