diff --git a/include/fmt/ranges.h b/include/fmt/ranges.h
index 98110b7b..f82e7164 100644
--- a/include/fmt/ranges.h
+++ b/include/fmt/ranges.h
@@ -326,6 +326,9 @@ template <typename CharT, CharT... C> struct string_literal {
   }
 };
 
+template <typename CharT, CharT... C>
+constexpr CharT string_literal<CharT, C...>::value[];
+
 }  // namespace detail
 
 template <typename T> struct is_tuple_like {