#endif
#include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
/**
*
* /systems/vacuum[n]/suction-inhg
*/
-class VacuumSystem : public FGSubsystem
+class VacuumSystem : public SGSubsystem
{
public: