diff --git a/libraries/AP_Vehicle/AP_Vehicle.cpp b/libraries/AP_Vehicle/AP_Vehicle.cpp
index d1ce301fa7..7a0ccbaacf 100644
--- a/libraries/AP_Vehicle/AP_Vehicle.cpp
+++ b/libraries/AP_Vehicle/AP_Vehicle.cpp
@@ -1,5 +1,7 @@
 #include "AP_Vehicle.h"
 
+#include <AP_Common/AP_FWVersion.h>
+
 #define SCHED_TASK(func, rate_hz, max_time_micros) SCHED_TASK_CLASS(AP_Vehicle, &vehicle, func, rate_hz, max_time_micros)
 
 /*
diff --git a/libraries/AP_Vehicle/AP_Vehicle.h b/libraries/AP_Vehicle/AP_Vehicle.h
index 87f557b5c3..b6c31afb03 100644
--- a/libraries/AP_Vehicle/AP_Vehicle.h
+++ b/libraries/AP_Vehicle/AP_Vehicle.h
@@ -163,6 +163,7 @@ public:
 protected:
 
     virtual void init_ardupilot() = 0;
+    virtual void load_parameters() = 0;
 
     // board specific config
     AP_BoardConfig BoardConfig;