#endif
#include <simgear/props/props.hxx>
-
-#include <Main/fgfs.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
/**
*
* /instrumentation/vertical-speed-indicator/indicated-speed-fpm
*/
-class VerticalSpeedIndicator : public FGSubsystem
+class VerticalSpeedIndicator : public SGSubsystem
{
public: