diff --git a/include/spdlog/common.h b/include/spdlog/common.h
index 771c9a35..fdeae6a0 100644
--- a/include/spdlog/common.h
+++ b/include/spdlog/common.h
@@ -161,7 +161,8 @@ struct format_string_wrapper
         , loc_{loc}
     {}
 #else
-    SPDLOG_CONSTEXPR format_string_wrapper(const Char* fmtstr, details::source_location loc = details::source_location::current())
+    template <typename S>
+    SPDLOG_CONSTEXPR format_string_wrapper(S fmtstr, details::source_location loc = details::source_location::current())
         : fmt_{fmtstr}
         , loc_{loc}
     {}