diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index 767bf54..edf4f71 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -619,6 +619,10 @@ CalcState Calculator::isParkingAllowed(Configuration const *cfg, QDateTime const
     if (paymentMethodId == PaymentMethod::Steps) {
         int const weekdayId = start.date().dayOfWeek();
         BusinessHours businessHours = Utilities::getBusinessHours(cfg, paymentMethodId);
+        if (businessHours == BusinessHours::NoRestriction_24_7) {
+            return CalcState(CalcState::State::SUCCESS, "PARKING_ALLOWED",
+                             QTime(0, 0, 0), QTime(23, 59, 59));
+        } else
         if (businessHours == BusinessHours::OnlyWeekDays) {
             if (weekdayId != (int)Qt::Saturday && weekdayId != (int)Qt::Sunday) { // e.g. Neuhauser, Linsinger Maschinenbau (741)
                 if (cfg->WeekDaysWorktime.count(weekdayId) > 0) {