diff --git a/libraries/AP_AHRS/examples/AHRS_Test/make.inc b/libraries/AP_AHRS/examples/AHRS_Test/make.inc
index 20f2bb4876..7015740435 100644
--- a/libraries/AP_AHRS/examples/AHRS_Test/make.inc
+++ b/libraries/AP_AHRS/examples/AHRS_Test/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