diff --git a/localization/ndt_scan_matcher/src/util_func.cpp b/localization/ndt_scan_matcher/src/util_func.cpp
index 237b85ad75e10..d570778fbe3b5 100644
--- a/localization/ndt_scan_matcher/src/util_func.cpp
+++ b/localization/ndt_scan_matcher/src/util_func.cpp
@@ -129,7 +129,7 @@ void get_nearest_timestamp_pose(
     const rclcpp::Time pose_time_stamp = output_new_pose_cov_msg_ptr->header.stamp;
     if (pose_time_stamp > time_stamp) {
       // TODO(Tier IV): refactor
-      if (pose_time_stamp.seconds() == 0.0) {
+      if (output_old_pose_cov_msg_ptr->header.stamp.sec == 0.0) {
         output_old_pose_cov_msg_ptr = output_new_pose_cov_msg_ptr;
       }
       break;