# include <config.h>
#endif
-#include STL_STRING
+#include <string>
#include <vector>
-SG_USING_STD(string);
-SG_USING_STD(vector);
+using std::string;
+using std::vector;
#include <simgear/props/props.hxx>
#include <simgear/structure/subsystem_mgr.hxx>