diff --git a/hb_server/apps/sam/views_sale.py b/hb_server/apps/sam/views_sale.py
index dad03e2..8db2b1e 100644
--- a/hb_server/apps/sam/views_sale.py
+++ b/hb_server/apps/sam/views_sale.py
@@ -161,7 +161,7 @@ class SaleProductViewSet(ListModelMixin, DestroyModelMixin, CreateModelMixin, Ge
         return Response()
     
 
-    @action(methods=['get', 'post'], detail=True, perms_map={'post':'sale_pack'}, serializer_class=serializers.Serializer)
+    @action(methods=['get', 'post'], detail=True, perms_map={'post':'sale_pack'}, serializer_class=SaleProductPackSerializer)
     @transaction.atomic
     def pack(self, request, pk=None):
         """