diff --git a/fmt/format.h b/fmt/format.h
index f4128df1..1427218b 100644
--- a/fmt/format.h
+++ b/fmt/format.h
@@ -923,7 +923,7 @@ struct IntTraits {
     TypeSelector<std::numeric_limits<T>::digits <= 32>::Type MainType;
 };
 
-#if FMT_HAS_GXX_CXX11
+#if FMT_HAS_CPP_ATTRIBUTE(noreturn)
 FMT_API [[noreturn]] void report_unknown_type(char code, const char *type);
 #else
 FMT_API void report_unknown_type(char code, const char *type);