#include <dbus/dbus.h>
+#ifndef DBUS_ERROR_UNKNOWN_OBJECT
+#define DBUS_ERROR_UNKNOWN_OBJECT "org.freedesktop.DBus.Error.UnknownObject"
+#endif
+
+#ifndef DBUS_ERROR_UNKNOWN_INTERFACE
+#define DBUS_ERROR_UNKNOWN_INTERFACE "org.freedesktop.DBus.Error.UnknownInterface"
+#endif
+
#include "manager.h"
typedef int (*BusPropertyCallback)(Manager *m, DBusMessageIter *iter, const char *property, void *data);