diff --git a/cmd/cart/pool-server.go b/cmd/cart/pool-server.go
index ddeeb2e..eb411f6 100644
--- a/cmd/cart/pool-server.go
+++ b/cmd/cart/pool-server.go
@@ -756,9 +756,9 @@ func (s *PoolServer) AdyenHookHandler(w http.ResponseWriter, r *http.Request) {
 	for _, notificationItem := range *notificationRequest.NotificationItems {
 		item := notificationItem.NotificationRequestItem
 		log.Printf("Recieved notification event code: %s, %v", item.EventCode, item)
-		cartId, ok := cart.ParseCartId(item.OriginalReference)
+		cartId, ok := cart.ParseCartId(item.MerchantReference)
 		if !ok {
-			log.Printf("invalid cart id %s", item.OriginalReference)
+			log.Printf("invalid cart id %s", item.MerchantReference)
 			http.Error(w, "Invalid cart id", http.StatusBadRequest)
 			return
 		}