diff --git a/include/spdlog/sinks/stdout_sinks-inl.h b/include/spdlog/sinks/stdout_sinks-inl.h
index d6768f59..9122152a 100644
--- a/include/spdlog/sinks/stdout_sinks-inl.h
+++ b/include/spdlog/sinks/stdout_sinks-inl.h
@@ -16,7 +16,7 @@
 // so instead we use ::FileWrite
 #include <spdlog/details/windows_include.h>
 
-#ifndef _USING_V110_SDK71_
+#ifndef _USING_V110_SDK71_ // fileapi.h doesnt exist in winxp
 #include <fileapi.h> // WriteFile (..)
 #endif