diff --git a/ArduCopter/APM_Config_mavlink_hil.h b/ArduCopter/APM_Config_mavlink_hil.h
index bd713d9bea..dbbd94414d 100644
--- a/ArduCopter/APM_Config_mavlink_hil.h
+++ b/ArduCopter/APM_Config_mavlink_hil.h
@@ -39,5 +39,4 @@
 // The magnetometer is not used in
 // HIL_MODE_ATTITUDE but you may leave it
 // enabled if you wish.
-#define AIRSPEED_SENSOR     ENABLED
 #define MAGNETOMETER        ENABLED