diff --git a/CMakeLists.txt b/CMakeLists.txt
index 96fcc4f..99eb569 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.0)
 
 # If you choose option 1 (so use your own cpp files in lab1/)
 # you should set this to ON
-option(USE_OWN_SRC_FILES_LAB1 "Use the cpp files in lab1/" OFF)
+option(USE_OWN_SRC_FILES_LAB1 "Use the cpp files in lab1/" ON)
 
 # name the project/executable (also ${PROJECT_NAME})
 project(raytracing)