diff --git a/system/system_monitor/src/cpu_monitor/arm_cpu_monitor.cpp b/system/system_monitor/src/cpu_monitor/arm_cpu_monitor.cpp
index 4b7fe6c03e32d..4f3c592327caa 100644
--- a/system/system_monitor/src/cpu_monitor/arm_cpu_monitor.cpp
+++ b/system/system_monitor/src/cpu_monitor/arm_cpu_monitor.cpp
@@ -28,7 +28,7 @@ CPUMonitor::CPUMonitor(const rclcpp::NodeOptions & options) : CPUMonitorBase("cp
 {
 }
 
-void CPUMonitor::checkThrottling(diagnostic_updater::DiagnosticStatusWrapper & stat)
+void CPUMonitor::checkThrottling(diagnostic_updater::DiagnosticStatusWrapper & /* stat */)
 {
   // TODO(Fumihito Ito): implement me
 }
diff --git a/system/system_monitor/src/cpu_monitor/raspi_cpu_monitor.cpp b/system/system_monitor/src/cpu_monitor/raspi_cpu_monitor.cpp
index 995bfddff0bfe..10e5960332978 100644
--- a/system/system_monitor/src/cpu_monitor/raspi_cpu_monitor.cpp
+++ b/system/system_monitor/src/cpu_monitor/raspi_cpu_monitor.cpp
@@ -29,8 +29,7 @@
 
 namespace fs = boost::filesystem;
 
-CPUMonitor::CPUMonitor(const std::string & node_name, const rclcpp::NodeOptions & options)
-: CPUMonitorBase("cpu_monitor", options)
+CPUMonitor::CPUMonitor(const rclcpp::NodeOptions & options) : CPUMonitorBase("cpu_monitor", options)
 {
 }
 
diff --git a/system/system_monitor/src/cpu_monitor/tegra_cpu_monitor.cpp b/system/system_monitor/src/cpu_monitor/tegra_cpu_monitor.cpp
index 19e9f362c1fbb..d4050f9d779c4 100644
--- a/system/system_monitor/src/cpu_monitor/tegra_cpu_monitor.cpp
+++ b/system/system_monitor/src/cpu_monitor/tegra_cpu_monitor.cpp
@@ -31,7 +31,7 @@ CPUMonitor::CPUMonitor(const rclcpp::NodeOptions & options) : CPUMonitorBase("cp
   updater_.removeByName("CPU Thermal Throttling");
 }
 
-void CPUMonitor::checkThrottling(diagnostic_updater::DiagnosticStatusWrapper & stat) {}
+void CPUMonitor::checkThrottling(diagnostic_updater::DiagnosticStatusWrapper & /* stat */) {}
 
 void CPUMonitor::getTempNames()
 {