diff --git a/src/observer/storage/trx/mvcc_trx.cpp b/src/observer/storage/trx/mvcc_trx.cpp
index 3a866dba6..ecf06a974 100644
--- a/src/observer/storage/trx/mvcc_trx.cpp
+++ b/src/observer/storage/trx/mvcc_trx.cpp
@@ -12,7 +12,6 @@ See the Mulan PSL v2 for more details. */
 // Created by Wangyunlai on 2023/04/24.
 //
 
-#include <cstddef>
 #include <limits>
 #include "storage/trx/mvcc_trx.h"
 #include "storage/field/field.h"
@@ -20,7 +19,6 @@ See the Mulan PSL v2 for more details. */
 #include "storage/db/db.h"
 #include "storage/clog/clog.h"
 
-
 using namespace std;
 
 MvccTrxKit::~MvccTrxKit()