diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index a9910313af..fec0a3e32f 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -330,7 +330,7 @@ static AP_Baro_HIL      barometer;
 static AP_Compass_HIL          compass;
 static AP_GPS_HIL              g_gps_driver;
 static AP_InertialSensor_HIL   ins;
-static AP_AHRS_DCM             ahrs(ins, g_gps);
+static AP_AHRS_DCM             ahrs(ins, barometer, g_gps);
 
 
  #if CONFIG_HAL_BOARD == HAL_BOARD_AVR_SITL