diff --git a/libraries/AP_Tuning/AP_Tuning.cpp b/libraries/AP_Tuning/AP_Tuning.cpp
index 83df2e5203..0fcc4e63f4 100644
--- a/libraries/AP_Tuning/AP_Tuning.cpp
+++ b/libraries/AP_Tuning/AP_Tuning.cpp
@@ -1,7 +1,9 @@
 #include "AP_Tuning.h"
+
 #include <AP_Logger/AP_Logger.h>
 #include <GCS_MAVLink/GCS.h>
 #include <RC_Channel/RC_Channel.h>
+#include <AP_Notify/AP_Notify.h>
 
 extern const AP_HAL::HAL& hal;