diff --git a/cpp/src/db/meta/MySQLMetaImpl.h b/cpp/src/db/meta/MySQLMetaImpl.h
index 64c703b688..97604ef3ea 100644
--- a/cpp/src/db/meta/MySQLMetaImpl.h
+++ b/cpp/src/db/meta/MySQLMetaImpl.h
@@ -53,7 +53,7 @@ class MySQLMetaImpl : public Meta {
 
     Status UpdateTableIndex(const std::string &table_id, const TableIndex& index) override;
 
-    Status UpdateTableFlag(const std::string &table_id, int64_t flag);
+    Status UpdateTableFlag(const std::string &table_id, int64_t flag) override;
 
     Status DescribeTableIndex(const std::string &table_id, TableIndex& index) override;
 
diff --git a/cpp/unittest/db/mysql_meta_test.cpp b/cpp/unittest/db/mysql_meta_test.cpp
index e7529506b0..ede879c3ba 100644
--- a/cpp/unittest/db/mysql_meta_test.cpp
+++ b/cpp/unittest/db/mysql_meta_test.cpp
@@ -351,7 +351,7 @@ TEST_F(MySqlMetaTest, TABLE_FILES_TEST) {
     status = impl_->DeleteTable(table_id);
     ASSERT_TRUE(status.ok());
 
-    status = impl_->CleanUpFilesWithTTL(1UL);
+    status = impl_->CleanUpFilesWithTTL(0UL);
     ASSERT_TRUE(status.ok());
 }