diff --git a/rclcpp/include/rclcpp/function_traits.hpp b/rclcpp/include/rclcpp/function_traits.hpp
index 8f051a0..0f8ef75 100644
--- a/rclcpp/include/rclcpp/function_traits.hpp
+++ b/rclcpp/include/rclcpp/function_traits.hpp
@@ -22,7 +22,6 @@ namespace rclcpp
 {
 
 namespace function_traits
-
 {
 
 /* NOTE(esteve):