diff --git a/LICENSE b/LICENSE
index 4947287f7..2bb9ad240 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,3 @@
-
                                  Apache License
                            Version 2.0, January 2004
                         http://www.apache.org/licenses/
diff --git a/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h b/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h
index 02c28f3e5..ccacf669a 100644
--- a/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h
+++ b/frameworks/innerkitsimpl/distributeddatafwk/src/delegate_mgr_callback.h
@@ -37,6 +37,7 @@ public:
 
     void GetKvStoreKeys(std::vector<DistributedKv::StoreInfo> &entries) override
     {
+
     }
 
     bool IsDestruct()
diff --git a/services/distributeddataservice/service/rdb/rdb_syncer.cpp b/services/distributeddataservice/service/rdb/rdb_syncer.cpp
index 3731e28a0..693baeb14 100644
--- a/services/distributeddataservice/service/rdb/rdb_syncer.cpp
+++ b/services/distributeddataservice/service/rdb/rdb_syncer.cpp
@@ -42,8 +42,10 @@ RdbSyncer::~RdbSyncer() noexcept
         manager_->CloseStore(delegate_);
     }
     delete manager_;
+    manager_ = nullptr;
     if (observer_ != nullptr) {
         delete observer_;
+        observer_ = nullptr;
     }
 }