diff --git a/library/src/calculate_price.cpp b/library/src/calculate_price.cpp
index 77c9e72..b021c62 100644
--- a/library/src/calculate_price.cpp
+++ b/library/src/calculate_price.cpp
@@ -311,7 +311,6 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
         return calcState.set(CalcState::State::BELOW_MIN_PARKING_TIME);
     }
     if (duration == 0) {
-        memset(price, 0x00, sizeof(*price));
         return calcState.set(CalcState::State::SUCCESS);
     }
 
@@ -375,7 +374,6 @@ CalcState CALCULATE_LIBRARY_API compute_price_for_parking_ticket(
         return calcState.set(CalcState::State::BELOW_MIN_PARKING_TIME);
     }
     if (netto_parking_time == 0) {
-        memset(price, 0x00, sizeof(*price));
         return calcState.set(CalcState::State::SUCCESS);
     }