diff --git a/papers/P2728.md b/papers/P2728.md
index b50b338..9d7e499 100644
--- a/papers/P2728.md
+++ b/papers/P2728.md
@@ -1185,7 +1185,7 @@ synopsis, with the value selected by the editor to reflect the date of
 adoption of this paper:
 
 ```cpp
-#define __cpp_lib_unicode_transcoding 20XXXXL // also in <ranges>
+#define __cpp_lib_unicode_transcoding 20XXXXL // freestanding, also in <ranges>
 ```
 
 # Design Discussion and Alternatives