diff --git a/library/src/utilities.cpp b/library/src/utilities.cpp
index 1dd0165..7051aa1 100644
--- a/library/src/utilities.cpp
+++ b/library/src/utilities.cpp
@@ -387,7 +387,15 @@ uint32_t Utilities::getMinimalParkingPrice(Configuration const *cfg, PaymentMeth
 }
 
 uint32_t Utilities::getFirstDurationStep(Configuration const *cfg, PaymentMethod methodId) {
-    int popId = cfg->PaymentOption.find(methodId)->second.pop_id;
-    int punId = cfg->PaymentRate.find(popId)->second.pra_payment_unit_id;
-    return cfg->Duration.find(punId)->second.pun_id;
+
+    int const popId = cfg->PaymentOption.find(methodId)->second.pop_id;
+    int const punId = cfg->PaymentRate.find(popId)->second.pra_payment_unit_id;
+    uint32_t const firstDurationStep= cfg->Duration.find(punId)->second.pun_duration;
+
+    qCritical() << "getFirstDurationStep() payment-method-id:" << (int)methodId;
+    qCritical() << "getFirstDurationStep()            pop-id:" << popId;
+    qCritical() << "getFirstDurationStep()            pun-id:" << punId;
+    qCritical() << "getFirstDurationStep()        first-step:" << firstDurationStep;
+
+    return firstDurationStep;
 }