diff --git a/library/src/calculate_price.cpp b/library/src/calculate_price.cpp
index fab44b3..90f67d7 100644
--- a/library/src/calculate_price.cpp
+++ b/library/src/calculate_price.cpp
@@ -85,6 +85,8 @@ int CALCULATE_LIBRARY_API compute_product_price(Configuration const *cfg, PERMIT
         // [[fallthrough]];
     case PERMIT_TYPE::DAY_TICKET_TEEN:
         // [[fallthrough]];
+    case PERMIT_TYPE::FOOD_STAMP:
+        // [[fallthrough]];
     case PERMIT_TYPE::DAY_TICKET_ADULT: {
         std::optional<QVector<ATBTariffProduct>> products = cfg->getTariffProductForProductId(permitType);
         if (products) {