diff --git a/src/main/java/vn/webapp/backend/auction/service/bid/AuctionHistoryServiceImpl.java b/src/main/java/vn/webapp/backend/auction/service/bid/AuctionHistoryServiceImpl.java
index cbaed3c..04c645f 100644
--- a/src/main/java/vn/webapp/backend/auction/service/bid/AuctionHistoryServiceImpl.java
+++ b/src/main/java/vn/webapp/backend/auction/service/bid/AuctionHistoryServiceImpl.java
@@ -129,7 +129,7 @@ public void deleteBidByUserAndAuction(Integer userId, Integer auctionId, String
         List<AuctionHistory> lastActiveBids = auctionHistoryRepository.findLastActiveBidByAuctionId(auctionId);
         if (!lastActiveBids.isEmpty()) {
             AuctionHistory lastActiveBid = lastActiveBids.get(0);
-            if (lastActiveBid.getPriceGiven() < auction.getJewelry().getBuyNowPrice()) {
+            if (lastActiveBid.getPriceGiven() < auction.getJewelry().getBuyNowPrice() && auction.getEndDateStored() != null) {
                 auction.setEndDate(auction.getEndDateStored());
             }
             auction.setLastPrice(lastActiveBid.getPriceGiven());