diff --git a/lumino/LuminoCore/include/LuminoCore/Base/detail/fmt/format.h b/lumino/LuminoCore/include/LuminoCore/Base/detail/fmt/format.h
index fa2d485..83decae 100644
--- a/lumino/LuminoCore/include/LuminoCore/Base/detail/fmt/format.h
+++ b/lumino/LuminoCore/include/LuminoCore/Base/detail/fmt/format.h
@@ -470,7 +470,7 @@ inline auto get_data(Container& c) -> typename Container::value_type* {
   return c.data();
 }
 
-#if defined(_SECURE_SCL) && _SECURE_SCL
+#if defined(_SECURE_SCL) && _SECURE_SCL && (!defined(_MSC_VER) || _MSC_VER < 1951)
 // Make a checked iterator to avoid MSVC warnings.
 template <typename T> using checked_ptr = stdext::checked_array_iterator<T*>;
 template <typename T>