diff --git a/quill/include/quill/detail/Serialize.h b/quill/include/quill/detail/Serialize.h
index bf7df29c3..6b85c28dd 100644
--- a/quill/include/quill/detail/Serialize.h
+++ b/quill/include/quill/detail/Serialize.h
@@ -29,7 +29,7 @@ namespace detail
 {
 
 constexpr auto strnlen =
-#ifdef __STDC_LIB_EXT1__
+#if defined(__STDC_LIB_EXT1__) || defined(_MSC_VER)
   ::strnlen_s
 #else
   ::strnlen