diff --git a/src/storage/tablelock/ob_table_lock_common.cpp b/src/storage/tablelock/ob_table_lock_common.cpp
index f5bdd891ca..a3f529cf30 100644
--- a/src/storage/tablelock/ob_table_lock_common.cpp
+++ b/src/storage/tablelock/ob_table_lock_common.cpp
@@ -228,7 +228,7 @@ int ObTableLockOwnerID::deserialize(const char* buf, const int64_t data_len, int
 {
   int ret = OB_SUCCESS;
   const int64_t origin_pos = pos;
-  int16_t magic_num = 0;
+  int64_t magic_num = 0;
   if (OB_ISNULL(buf) || OB_UNLIKELY(data_len <= 0)) {
     ret = OB_INVALID_ARGUMENT;
     LOG_WARN("invalid args", KR(ret), KP(buf), K(data_len));
diff --git a/src/storage/tablelock/ob_table_lock_common.h b/src/storage/tablelock/ob_table_lock_common.h
index 193d7fb588..ca20e404c9 100644
--- a/src/storage/tablelock/ob_table_lock_common.h
+++ b/src/storage/tablelock/ob_table_lock_common.h
@@ -450,7 +450,7 @@ bool is_lock_owner_type_valid(const ObLockOwnerType &type)
 class ObNewTableLockOwnerID
 {
 public:
-  static const int16_t MAGIC_NUM = -0xABC;
+  static const int64_t MAGIC_NUM = -0xABC;
 };
 
 class ObTableLockOwnerID