diff --git a/library/include/mobilisis/calculate_price.h b/library/include/mobilisis/calculate_price.h
index e9ecd19..7bbdfef 100644
--- a/library/include/mobilisis/calculate_price.h
+++ b/library/include/mobilisis/calculate_price.h
@@ -18,6 +18,8 @@
 #define CALCULATE_LIBRARY_API
 #endif
 
+#include "tariff_permit_type.h"
+
 class Configuration;
 
 typedef Configuration parking_tariff_t;
@@ -39,17 +41,6 @@ struct CALCULATE_LIBRARY_API price_t {
     }
 };
 
-enum class PERMIT_TYPE : quint8 {
-    SHORT_TERM_PARKING,
-    DAY_TICKET,
-    SZEGED_START,
-    SZEGED_STOP,
-    DAY_TICKET_ADULT,
-    DAY_TICKET_TEEN,
-    DAY_TICKET_CHILD,
-    INVALID
-};
-
 struct CALCULATE_LIBRARY_API CalcState {
     enum class State : uint8_t {
         SUCCESS,
@@ -161,7 +152,7 @@ QList<int> CALCULATE_LIBRARY_API get_time_steps(Configuration *cfg);
 int CALCULATE_LIBRARY_API get_minimal_parkingtime(Configuration *cfg, PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING);
 int CALCULATE_LIBRARY_API get_maximal_parkingtime(Configuration *cfg, PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING);
 int CALCULATE_LIBRARY_API get_minimal_parkingprice(Configuration *cfg, PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING);
-int CALCULATE_LIBRARY_API get_maximal_parkingprice(Configuration *cfg, PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING);
+int CALCULATE_LIBRARY_API compute_product_price(Configuration const *cfg, PERMIT_TYPE permitType = PERMIT_TYPE::SHORT_TERM_PARKING);
 
 CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(       // deprecated
                                             parking_tariff_t *tariff,