diff --git a/library/include/mobilisis/calculate_price.h b/library/include/mobilisis/calculate_price.h
index 8dfd4c5..0ecfeeb 100644
--- a/library/include/mobilisis/calculate_price.h
+++ b/library/include/mobilisis/calculate_price.h
@@ -111,7 +111,8 @@ int CALCULATE_LIBRARY_API get_zone_nr(int zone = -1);
 
 int CALCULATE_LIBRARY_API compute_next_timestep(parking_tariff_t *tariff, int currentTimeMinutes, int UpDown);
 
-QList<int> CALCULATE_LIBRARY_API get_time_steps(Configuration *cfg, qint64 startInMinutes = QDateTime::currentSecsSinceEpoch() / 60);
+QList<int> CALCULATE_LIBRARY_API get_time_steps(Configuration *cfg);
+int CALCULATE_LIBRARY_API get_minimum_parkingtime(Configuration *cfg);
 
 CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(       // deprecated
                                             parking_tariff_t *tariff,