diff --git a/system/system_monitor/include/system_monitor/mem_monitor/mem_monitor.hpp b/system/system_monitor/include/system_monitor/mem_monitor/mem_monitor.hpp
index af9d69d4ba085..c8e79372c6c30 100644
--- a/system/system_monitor/include/system_monitor/mem_monitor/mem_monitor.hpp
+++ b/system/system_monitor/include/system_monitor/mem_monitor/mem_monitor.hpp
@@ -101,10 +101,10 @@ class MemMonitor : public rclcpp::Node
     timer_;  //!< @brief Timer to execute readUsage and edac-utils command
   rclcpp::CallbackGroup::SharedPtr timer_callback_group_;  //!< @brief Callback Group
 
-  std::mutex usage_mutex_;                      //!< @brief Mutex for output from /proc/meminfo
-  std::string usage_error_str_;                 //!< @brief Error string
-  std::map<std::string, size_t> usage_map_;     //!< @brief Output of /proc/meminfo
-  double usage_elapsed_ms_;                     //!< @brief Execution time of readUsage
+  std::mutex usage_mutex_;                   //!< @brief Mutex for output from /proc/meminfo
+  std::string usage_error_str_;              //!< @brief Error string
+  std::map<std::string, size_t> usage_map_;  //!< @brief Output of /proc/meminfo
+  double usage_elapsed_ms_;                  //!< @brief Execution time of readUsage
   std::mutex usage_timeout_mutex_;  //!< @brief Mutex regarding timeout for executing readUsage
 
   std::mutex ecc_mutex_;             //!< @brief Mutex for output from edac-util command
@@ -113,8 +113,8 @@ class MemMonitor : public rclcpp::Node
   std::string ecc_output_;           //!< @brief Output of edac-util command
   double ecc_elapsed_ms_;            //!< @brief Execution time of edac-util command
   std::mutex
-    ecc_timeout_mutex_;       //!< @brief Mutex regarding timeout for executing edac-util command
-  bool use_edac_util_;        //!< @brief Available to use edac-util command or not
+    ecc_timeout_mutex_;  //!< @brief Mutex regarding timeout for executing edac-util command
+  bool use_edac_util_;   //!< @brief Available to use edac-util command or not
 
   /**
    * @brief Memory usage status messages
diff --git a/system/system_monitor/src/mem_monitor/mem_monitor.cpp b/system/system_monitor/src/mem_monitor/mem_monitor.cpp
index e3888daf98b8c..e7c089456b309 100644
--- a/system/system_monitor/src/mem_monitor/mem_monitor.cpp
+++ b/system/system_monitor/src/mem_monitor/mem_monitor.cpp
@@ -297,7 +297,7 @@ std::string MemMonitor::executeEdacUtil(std::string & output, std::string & pipe
 }
 
 void MemMonitor::onTimer()
-{ 
+{
   tier4_autoware_utils::StopWatch<std::chrono::milliseconds> stop_watch;
 
   // Check Memory Usage