diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index fc3bda6..41045c0 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -508,21 +508,6 @@ Ticket Calculator::private_GetDurationFromCost(Configuration *cfg,
     // Get input date
     QDateTime current = start;
 
-    // use tariff with structure as for instance Schnau, Koenigsee:
-    // without given YearPeriod, SpecialDays and SpecialDaysWorktime
-    if (cfg->YearPeriod.size() == 0
-        && cfg->SpecialDays.size() == 0
-        && cfg->SpecialDaysWorktime.size() == 0)
-    {
-        uint64_t const durationMinutes = GetDurationForPrice(cfg, cost);
-        uint64_t const durationSeconds = durationMinutes * 60;
-        current = current.addSecs(durationSeconds);
-
-        return
-            Ticket(start, current, durationMinutes, durationMinutes,
-                   cost, Ticket::s[VALID]);
-    }
-
     static const PaymentMethod paymentMethodId = Utilities::getPaymentMethodId(cfg);
     static const bool carryOverNotSet = isCarryOverNotSet(cfg, paymentMethodId);
     static const uint32_t minParkingTimeMinutes = std::max(getMinimalParkingTime(cfg, paymentMethodId), 0);