diff --git a/utilities/transactions/lock/point/point_lock_manager.cc b/utilities/transactions/lock/point/point_lock_manager.cc
index 8846cb87a..82897897b 100644
--- a/utilities/transactions/lock/point/point_lock_manager.cc
+++ b/utilities/transactions/lock/point/point_lock_manager.cc
@@ -587,10 +587,7 @@ void PointLockManager::UnLockKey(PessimisticTransaction* txn,
       if (txns.size() == 1) {
         stripe->keys.erase(stripe_iter);
       } else {
-        auto last_it = txns.end() - 1;
-        if (txn_it != last_it) {
-          *txn_it = *last_it;
-        }
+        std::swap(txns.back(), *txn_it);
         txns.pop_back();
       }