diff --git a/CMakeLists.txt b/CMakeLists.txt
index fdd12ef..098f803 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,14 +2,13 @@
 cmake_minimum_required(VERSION 2.8)
 
 # choose source file
-file(GLOB LIB_SRC_LIST src/*.cpp)
+file(GLOB LIB_SRC_LIST src/input.cpp src/keybindings.cpp src/textbuffer.cpp)
 file(GLOB LIB_HEAD_LIST src/*.h)
-list(REMOVE_ITEM LIB_SRC_LIST src/main.cpp)
 set(EXEC_SRC_LIST src/main.cpp)
 
 #set compilation option
 set(IS_LIBRARY True)
-set(SFML_MODULES window)
+set(SFML_MODULES window system)
 
 set(CMAKE_TEMPLATE_PATH "../CMakeTemplate")