diff --git a/library/src/calculate_price.cpp b/library/src/calculate_price.cpp
index 042a35f..8dbc806 100644
--- a/library/src/calculate_price.cpp
+++ b/library/src/calculate_price.cpp
@@ -732,16 +732,18 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
 
     // netto_parking_time = minMin;
 
-    // DEBUG
-    qCritical() << "compute_price_for_parking_ticket() " << endl
-                << "          paymentOptionIndex: " << paymentOptionIndex << endl
-                << "          start_parking_time: " << start_parking_time << endl
-                << "          netto_parking_time: " << netto_parking_time << endl
-                << "               start + netto: " << start_parking_time.addSecs(netto_parking_time * 60) << endl
-                << "                      minMin: " << minMin << endl
-                << "                      maxMin: " << maxMin << endl
-                << "                     prepaid: " << prepaid << endl
-                << "                  permitType: " << permitType.toString();
+    if (DBG_LEVEL >= DBG_DEBUG) {
+        qCritical() << "compute_price_for_parking_ticket() " << endl
+                    << "          paymentOptionIndex: " << paymentOptionIndex << endl
+                    << "          start_parking_time: " << start_parking_time << endl
+                    << "         start_parking_time_: " << start_parking_time_ << endl
+                    << "          netto_parking_time: " << netto_parking_time << endl
+                    << "               start + netto: " << start_parking_time.addSecs(netto_parking_time * 60) << endl
+                    << "                      minMin: " << minMin << endl
+                    << "                      maxMin: " << maxMin << endl
+                    << "                     prepaid: " << prepaid << endl
+                    << "                  permitType: " << permitType.toString();
+    }
 
     if (netto_parking_time < 0) {
         calcState.setDesc(QString("end=%1, start=%2")
@@ -788,14 +790,14 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
             if (yperiod.has_value()) {
                 ATBPeriodYear const &period = yperiod.value();
                 pop_carry_over_option_id = period.pye_id;
-                qCritical() << __func__ << __LINE__ << "re-computed carry-over-id" << pop_carry_over_option_id;
+                //qCritical() << __func__ << __LINE__ << "re-computed carry-over-id" << pop_carry_over_option_id;
             }
 
             QTime const carryOverStart = tariff->TariffCarryOverOptions.find(pop_carry_over_option_id)->second.carryover[weekDay].static_start;
             int const carryOverDuration = tariff->TariffCarryOverOptions.find(pop_carry_over_option_id)->second.carryover[weekDay].duration;
 
-            qCritical() << __func__ << __LINE__ << "carryOverStart" << carryOverStart.toString(Qt::ISODate);
-            qCritical() << __func__ << __LINE__ << "carryOverDuration" << carryOverDuration;
+            //qCritical() << __func__ << __LINE__ << "carryOverStart" << carryOverStart.toString(Qt::ISODate);
+            //qCritical() << __func__ << __LINE__ << "carryOverDuration" << carryOverDuration;
 
             // handle prepaid option
             QDateTime effectiveStartTime(start_parking_time);
@@ -860,7 +862,7 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
         end_parking_time = end_parking_time.addDays(-1);
         end_parking_time.setTime(QTime(23, 59, 0));
     }
-    qCritical() << __func__ << __LINE__ << "end_parking_time" << end_parking_time.toString(Qt::ISODate);
+    //qCritical() << __func__ << __LINE__ << "end_parking_time" << end_parking_time.toString(Qt::ISODate);
 
     return calcState.set(CalcState::State::SUCCESS);
 }