diff --git a/libraries/AP_Mount/examples/trivial_AP_Mount/trivial_AP_Mount.pde b/libraries/AP_Mount/examples/trivial_AP_Mount/trivial_AP_Mount.pde
index 45cd603ccb..efe87c5936 100644
--- a/libraries/AP_Mount/examples/trivial_AP_Mount/trivial_AP_Mount.pde
+++ b/libraries/AP_Mount/examples/trivial_AP_Mount/trivial_AP_Mount.pde
@@ -18,6 +18,10 @@
 #include <Filter.h>
 #include <GCS_MAVLink.h>
 #include <RC_Channel.h>
+#include <AP_Airspeed.h>
+#include <AP_SpdHgtControl.h>
+#include <DataFlash.h>
+#include <AP_Notify.h>
 
 #include <AP_Mount.h>