diff --git a/CMakeLists.txt b/CMakeLists.txt
index c01ead7..a607c8e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 project(PDP-11)
 cmake_minimum_required(VERSION 3.9)
 
-add_compile_options(-Wall -pedantic)
+add_compile_options(-Wall -pedantic -Wextra)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
@@ -28,8 +28,8 @@ add_executable(
 include(CheckIPOSupported)
 check_ipo_supported(RESULT supported)
 
-set(CMAKE_BUILD_TYPE RelWithDebInfo)
-#set(CMAKE_BUILD_TYPE Debug)
+#set(CMAKE_BUILD_TYPE RelWithDebInfo)
+set(CMAKE_BUILD_TYPE Debug)
 
 set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
 set(THREADS_PREFER_PTHREAD_FLAG TRUE)