diff --git a/AntennaTracker/Tracker.h b/AntennaTracker/Tracker.h
index 5371eff85d..7ecacfc8da 100644
--- a/AntennaTracker/Tracker.h
+++ b/AntennaTracker/Tracker.h
@@ -27,7 +27,6 @@
 #include <stdio.h>
 
 #include <AP_Common/AP_Common.h>
-#include <AP_HAL/AP_HAL.h>
 #include <AP_Param/AP_Param.h>
 #include <AP_Math/AP_Math.h>        // ArduPilot Mega Vector/Matrix math Library
 #include <AP_AHRS/AP_AHRS.h>         // ArduPilot Mega DCM Library