diff --git a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/PaperServiceImpl.java b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/PaperServiceImpl.java
index 72a78e33..4fa06a29 100644
--- a/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/PaperServiceImpl.java
+++ b/safety-cedu-service/src/main/java/org/qinan/cedu/service/impl/PaperServiceImpl.java
@@ -205,7 +205,7 @@ public class PaperServiceImpl extends ServiceImpl<PaperMapper, PaperDO> implemen
     @Override
     @Transactional(rollbackFor = Exception.class)
     public boolean bindQuestions(Long paperId, List<Long> questionIds) {
-        Db.remove(Wrappers.<PaperQuestionRelDO>lambdaQuery()
+        Db.remove(new LambdaQueryWrapper<PaperQuestionRelDO>()
                 .eq(PaperQuestionRelDO::getPaperId, paperId));
         if (CollectionUtils.isEmpty(questionIds)) {
             return true;