diff --git a/rclcpp/include/rclcpp/time_source.hpp b/rclcpp/include/rclcpp/time_source.hpp
index 6f5280572a..4913c15e2b 100644
--- a/rclcpp/include/rclcpp/time_source.hpp
+++ b/rclcpp/include/rclcpp/time_source.hpp
@@ -142,6 +142,9 @@ class TimeSource
   // Store (and update on node attach) logger for logging.
   Logger logger_;
 
+  // Fully qualified node name
+  const char * node_name_;
+
   // QoS of the clock subscription.
   rclcpp::QoS qos_;
 
diff --git a/rclcpp/src/rclcpp/time_source.cpp b/rclcpp/src/rclcpp/time_source.cpp
index a958629e31..9b03d10c26 100644
--- a/rclcpp/src/rclcpp/time_source.cpp
+++ b/rclcpp/src/rclcpp/time_source.cpp
@@ -84,6 +84,7 @@ void TimeSource::attachNode(
   node_parameters_ = node_parameters_interface;
   // TODO(tfoote): Update QOS
 
+  node_name_ = node_base_->get_fully_qualified_name();
   logger_ = node_logging_->get_logger();
 
   // Though this defaults to false, it can be overridden by initial parameter values for the node,
@@ -297,7 +298,7 @@ void TimeSource::destroy_clock_sub()
 void TimeSource::on_parameter_event(const rcl_interfaces::msg::ParameterEvent::SharedPtr event)
 {
   // Filter out events on 'use_sim_time' parameter instances in other nodes.
-  if (event->node != node_base_->get_fully_qualified_name()) {
+  if (event->node != node_name_) {
     return;
   }
   // Filter for only 'use_sim_time' being added or changed.