diff --git a/CMakeLists.txt b/CMakeLists.txt
index 807fc2f..623b09c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,7 @@
 cmake_minimum_required(VERSION 3.2)
 project(maconv)
 
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra")
 
 # Compile vendor libraries.
 add_subdirectory("vendors/libhfs")