diff --git a/localization/localization_error_monitor/src/localization_error_monitor.cpp b/localization/localization_error_monitor/src/localization_error_monitor.cpp
index 67cdb78c942fb..7a1cd0b213c39 100644
--- a/localization/localization_error_monitor/src/localization_error_monitor.cpp
+++ b/localization/localization_error_monitor/src/localization_error_monitor.cpp
@@ -129,7 +129,7 @@ void LocalizationErrorMonitor::onOdom(nav_msgs::msg::Odometry::ConstSharedPtr in
   diag_merged_status.hardware_id = this->get_name();
 
   diagnostic_msgs::msg::DiagnosticArray diag_msg;
-  diag_msg.header.stamp = this->now();
+  diag_msg.header.stamp = input_msg->header.stamp;
   diag_msg.status.push_back(diag_merged_status);
   diag_pub_->publish(diag_msg);
 }