diff --git a/library/src/calculate_price.cpp b/library/src/calculate_price.cpp
index 58363a6..e8f0731 100644
--- a/library/src/calculate_price.cpp
+++ b/library/src/calculate_price.cpp
@@ -59,13 +59,13 @@ CalcState CALCULATE_LIBRARY_API init_tariff(parking_tariff_t **tariff, char cons
 
         QString json = fname.readAll();
         if (! (*tariff)->ParseJson(*tariff, json.toStdString().c_str())) {
-            calcState.m_status = CalcState::State::ERROR_PARSING_TARIFF;
+            return calcState.set(CalcState::State::ERROR_PARSING_TARIFF);
         }
     } else {
-        calcState.m_status = CalcState::State::ERROR_LOADING_TARIFF;
+        return calcState.set(CalcState::State::ERROR_LOADING_TARIFF);
     }
 
-    qCritical() << "init_tariff: Parsing tariff config (" << confFile << ") failed!";
+    qCritical() << "init_tariff: Parsing tariff config (" << confFile << ")";
 
     return calcState;
 }
diff --git a/library/src/calculator_functions.cpp b/library/src/calculator_functions.cpp
index 97e0b2e..7aec757 100644
--- a/library/src/calculator_functions.cpp
+++ b/library/src/calculator_functions.cpp
@@ -509,6 +509,6 @@ double Calculator::GetCostFromDuration(Configuration* cfg, uint8_t payment_optio
 
 	double ret_val = total_cost;
 	total_cost = 0.0f;
-    // return ceil(ret_val);
-    return floor(ret_val);
+    return ceil(ret_val);
+    // return floor(ret_val);
 }
diff --git a/main/main.cpp b/main/main.cpp
index 97e5a15..c4ed0f5 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -80,7 +80,8 @@ int main() {
         memset(&now, 0, sizeof(now));
         strptime("2023-04-30T06:00:00", "%Y-%m-%dT%H:%M:%S", &now);
         now.tm_hour -= 1; // for ctime
-        for (int i=0; i<6*24; ++i) {
+        // for (int i=0; i<6*24; ++i) {
+        for (int i=0; i<1; ++i) {
             int const duration = 120;
             time_t t = mktime(&now);
             start_parking_time = t / 60;