diff --git a/CMakeLists.txt b/CMakeLists.txt
index 645b185..5fc5439 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -41,6 +41,7 @@ if(MSVC)
     add_definitions("/Zc:__cplusplus")  # define __cplusplus value correctly
     add_definitions("/utf-8")           # enable to use u8"" literal
     if(MSVC_VERSION LESS 1910)
+        message(STATUS "MSVC < 1910. DEFINE_CONVERSION_NON_INTRUSIVE is disabled")
         add_definitions(-DTOML11_WITHOUT_DEFINE_NON_INTRUSIVE)
     elseif(MSVC_VERSION LESS 1920)
         add_definitions("/experimental:preprocessor") # MSVC 2017