diff --git a/src/lib/fmt/PathFormatter.hxx b/src/lib/fmt/PathFormatter.hxx
index 417d4512d..e5ae89dec 100644
--- a/src/lib/fmt/PathFormatter.hxx
+++ b/src/lib/fmt/PathFormatter.hxx
@@ -1,24 +1,19 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 // Copyright The Music Player Daemon Project
 
-#ifndef PATH_FORMATTER_HXX
-#define PATH_FORMATTER_HXX
+#pragma once
 
 #include "fs/Path.hxx"
-#include "fs/AllocatedPath.hxx"
 
 #include <fmt/format.h>
 
-template<>
-struct fmt::formatter<Path> : formatter<string_view>
+#include <concepts>
+
+template<std::convertible_to<Path> T>
+struct fmt::formatter<T> : formatter<string_view>
 {
 	template<typename FormatContext>
 	auto format(Path path, FormatContext &ctx) {
 		return formatter<string_view>::format(path.ToUTF8(), ctx);
 	}
 };
-
-template<>
-struct fmt::formatter<AllocatedPath> : formatter<Path> {};
-
-#endif