diff --git a/library/include/mobilisis/calculator_functions.h b/library/include/mobilisis/calculator_functions.h
index f757d76..31e0533 100644
--- a/library/include/mobilisis/calculator_functions.h
+++ b/library/include/mobilisis/calculator_functions.h
@@ -58,14 +58,10 @@ private:
 
     Ticket private_GetCostFromDuration(Configuration const* cfg,
                                        QDateTime const &start,
-                                       QDateTime &end,
-                                       int &durationMinutes,
-                                       bool nextDay = false,
-                                       bool prepaid = false,
-                                       bool overtime = false);
+                                       int durationMinutes,
+                                       bool prepaid = false);
 
-    bool checkDurationMinutes(bool overTime,
-                              int minParkingTime, int maxParkingTime,
+    bool checkDurationMinutes(int minParkingTime, int maxParkingTime,
                               int durationMinutes);
 
     //