diff --git a/src/script/api/script_vehicle.cpp b/src/script/api/script_vehicle.cpp
--- a/src/script/api/script_vehicle.cpp
+++ b/src/script/api/script_vehicle.cpp
@@ -24,6 +24,8 @@
 #include "../../aircraft.h"
 #include "table/strings.h"
 
+#include "../../safeguards.h"
+
 /* static */ bool ScriptVehicle::IsValidVehicle(VehicleID vehicle_id)
 {
 	const Vehicle *v = ::Vehicle::GetIfValid(vehicle_id);