diff --git a/include/moveit_middleware_benchmark/scenarios/scenario_basic_service_client.hpp b/include/moveit_middleware_benchmark/scenarios/scenario_basic_service_client.hpp
index 5ceadcd..31c98b7 100644
--- a/include/moveit_middleware_benchmark/scenarios/scenario_basic_service_client.hpp
+++ b/include/moveit_middleware_benchmark/scenarios/scenario_basic_service_client.hpp
@@ -59,7 +59,7 @@ class ScenarioBasicServiceClient
   /** \brief Constructor
    *  \param [in] node The ros node for sending request and wait response from server
    */
-  ScenarioBasicServiceClient(rclcpp::Node::SharedPtr node);
+  ScenarioBasicServiceClient(const rclcpp::Node::SharedPtr& node);
 
   /** \brief the method to send the requests \e sending_request_number times
    * \param [in] sending_request_number the number for how many request is sent by client
diff --git a/src/scenarios/scenario_basic_service_client.cpp b/src/scenarios/scenario_basic_service_client.cpp
index ad677fe..5141b0c 100644
--- a/src/scenarios/scenario_basic_service_client.cpp
+++ b/src/scenarios/scenario_basic_service_client.cpp
@@ -46,7 +46,7 @@ namespace middleware_benchmark
 
 using namespace std::chrono_literals;
 
-ScenarioBasicServiceClient::ScenarioBasicServiceClient(rclcpp::Node::SharedPtr node) : node_(node)
+ScenarioBasicServiceClient::ScenarioBasicServiceClient(const rclcpp::Node::SharedPtr& node) : node_(node)
 {
   client_ = node_->create_client<example_interfaces::srv::AddTwoInts>("add_two_ints");