diff --git a/CMakeLists.txt b/CMakeLists.txt
index b1e96a4..9c6bcf0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.8)
+cmake_minimum_required(VERSION 3.10)
 project(xss-lock C)
 set(PROJECT_VERSION 0.3.0)
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c7036ec..e575ba6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -22,8 +22,6 @@ include_directories(${CMAKE_CURRENT_BINARY_DIR})
 add_executable(xss-lock
     xss-lock.c
     xcb_utils.c
-    xcb_utils.h
-    config.h
 )
 
 target_link_libraries(xss-lock ${GLIB2_LIBRARIES} ${XCB_LIBRARIES})