diff --git a/rclcpp/include/rclcpp/timer.hpp b/rclcpp/include/rclcpp/timer.hpp
index 5180cab7fb..48d517c806 100644
--- a/rclcpp/include/rclcpp/timer.hpp
+++ b/rclcpp/include/rclcpp/timer.hpp
@@ -156,7 +156,7 @@ class GenericTimer : public TimerBase
 
 using WallTimer = GenericTimer<std::chrono::steady_clock>;
 
-} /* namespace timer */
-} /* namespace rclcpp */
+}  // namespace timer
+}  // namespace rclcpp
 
 #endif  // RCLCPP__TIMER_HPP_
diff --git a/rclcpp/src/rclcpp/executors/single_threaded_executor.cpp b/rclcpp/src/rclcpp/executors/single_threaded_executor.cpp
index 23001fe5fa..39f04bf1f8 100644
--- a/rclcpp/src/rclcpp/executors/single_threaded_executor.cpp
+++ b/rclcpp/src/rclcpp/executors/single_threaded_executor.cpp
@@ -16,7 +16,8 @@
 
 using rclcpp::executors::single_threaded_executor::SingleThreadedExecutor;
 
-SingleThreadedExecutor::SingleThreadedExecutor(rclcpp::memory_strategy::MemoryStrategy::SharedPtr ms)
+SingleThreadedExecutor::SingleThreadedExecutor(
+  rclcpp::memory_strategy::MemoryStrategy::SharedPtr ms)
 : executor::Executor(ms) {}