diff --git a/CMakeLists.txt b/CMakeLists.txt
index e94640c..caaf4ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,6 +14,7 @@ configure_file("resources/${PROJECT_NAME}.rc" "processed/${PROJECT_NAME}.rc" @ON
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_FLAGS "-Wall")
 if (NOT MSVC)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")