diff --git a/libraries/AP_Airspeed/examples/Airspeed/make.inc b/libraries/AP_Airspeed/examples/Airspeed/make.inc
index fc80e94468..2e81fa1ad4 100644
--- a/libraries/AP_Airspeed/examples/Airspeed/make.inc
+++ b/libraries/AP_Airspeed/examples/Airspeed/make.inc
@@ -9,6 +9,7 @@ LIBRARIES += AP_Compass
 LIBRARIES += AP_Declination
 LIBRARIES += AP_GPS
 LIBRARIES += AP_InertialSensor
+LIBRARIES += AP_AccelCal
 LIBRARIES += AP_Math
 LIBRARIES += AP_Mission
 LIBRARIES += AP_NavEKF