diff --git a/r5dev/thirdparty/spdlog/fmt/bundled/core.h b/r5dev/thirdparty/spdlog/fmt/bundled/core.h
index f6a37af9..a1752398 100644
--- a/r5dev/thirdparty/spdlog/fmt/bundled/core.h
+++ b/r5dev/thirdparty/spdlog/fmt/bundled/core.h
@@ -3004,7 +3004,7 @@ void check_format_string(S format_str) {
   FMT_CONSTEXPR auto s = basic_string_view<typename S::char_type>(format_str);
   using checker = format_string_checker<typename S::char_type, error_handler,
                                         remove_cvref_t<Args>...>;
-  FMT_CONSTEXPR bool invalid_format =
+  /*FMT_CONSTEXPR*/bool invalid_format =
       (parse_format_string<true>(s, checker(s, {})), true);
   ignore_unused(invalid_format);
 }