diff --git a/robotis_controller/CMakeLists.txt b/robotis_controller/CMakeLists.txt
index 9ffde36..db8b1f5 100755
--- a/robotis_controller/CMakeLists.txt
+++ b/robotis_controller/CMakeLists.txt
@@ -22,7 +22,7 @@ find_package(catkin REQUIRED COMPONENTS
 )
 
 find_package(PkgConfig REQUIRED)
-pkg_check_modules(YAML_CPP REQUIRED yaml-cpp)
+pkg_check_modules(yaml_cpp yaml-cpp REQUIRED)
 
 ################################################################################
 # Declare ROS messages, services and actions