diff --git a/prototype/src/main/java/org/hso/ecommerce/action/cronjob/UpdateOffersAction.java b/prototype/src/main/java/org/hso/ecommerce/action/cronjob/UpdateOffersAction.java
index 3046f2f..f095381 100644
--- a/prototype/src/main/java/org/hso/ecommerce/action/cronjob/UpdateOffersAction.java
+++ b/prototype/src/main/java/org/hso/ecommerce/action/cronjob/UpdateOffersAction.java
@@ -29,6 +29,12 @@ public class UpdateOffersAction {
 
     public List<ArticleOffer> finish() {
         HashMap<ArticleIdentifier, ArticleOffer> availableOffers = mapOffers();
+
+        // Reset all advertise-flags first. They are set again below.
+        for (ArticleOffer offer : availableOffers.values()) {
+            offer.shouldBeAdvertised = false;
+        }
+
         for (Entry<ArticleIdentifier, Offer> cheapestOffer : cheapestOffer.entrySet()) {
             String manufacturer = cheapestOffer.getKey().manufacturer;
             String articleNumber = cheapestOffer.getKey().articleNumber;
@@ -42,7 +48,11 @@ public class UpdateOffersAction {
             Article currentOfferedArticle = cheapestOffer.getValue().apiSupplier.findArticle(manufacturer,
                     articleNumber);
             currentOffer.vatPercent = currentOfferedArticle.vatPercent;
-            currentOffer.shouldBeAdvertised = currentOfferedArticle.shouldBeAdvertised;
+
+            // Set advertise-flag if any supplier wants it to be set
+            if (currentOfferedArticle.shouldBeAdvertised) {
+                currentOffer.shouldBeAdvertised = true;
+            }
         }
         return offers;
     }