# error This library requires C++
#endif
-#include <simgear/misc/props.hxx>
-#include <Main/fgfs.hxx>
+#include <simgear/props/props.hxx>
+#include <simgear/structure/subsystem_mgr.hxx>
#include "gyro.hxx"
*
* /instrumentation/slip-skid-ball/indicated-slip-skid
*/
-class SlipSkidBall : public FGSubsystem
+class SlipSkidBall : public SGSubsystem
{
public: