diff --git a/services/ans/test/unittest/notification_rdb_data_mgr_test/notification_rdb_data_mgr_test.cpp b/services/ans/test/unittest/notification_rdb_data_mgr_test/notification_rdb_data_mgr_test.cpp
index 5e23c6de3388dbde7dc284cc200cf964af4df0fa..fae2068290a1b954e30d9008566217ca83118355 100755
--- a/services/ans/test/unittest/notification_rdb_data_mgr_test/notification_rdb_data_mgr_test.cpp
+++ b/services/ans/test/unittest/notification_rdb_data_mgr_test/notification_rdb_data_mgr_test.cpp
@@ -272,6 +272,11 @@ class RdbStoreTest : public RdbStore {
         {
             return E_ERROR;
         };
+
+        virtual int Sync(const SyncOption& option, const AbsRdbPredicates& predicate, const AsyncDetail& async)
+        {
+            return E_ERROR;
+        };
         
         virtual int Sync(const SyncOption& option, const std::vector<std::string>& tables, const AsyncDetail& async)
         {