diff --git a/lib/libc/locale/xlocale_private.h b/lib/libc/locale/xlocale_private.h
--- a/lib/libc/locale/xlocale_private.h
+++ b/lib/libc/locale/xlocale_private.h
@@ -163,7 +163,10 @@
 
 /**
  * Load functions.  Each takes the name of a locale and a pointer to the data
- * to be initialised as arguments.  Two special values are allowed for the 
+ * to be initialised as arguments.  Three special values are allowed for the
+ * name of the locale: C, POSIX, and C.UTF-8.  When these are used, we may
+ * use some statically defined tables rather than allocating memory for the
+ * locales' use.
  */
 extern void* __collate_load(const char*, locale_t);
 extern void* __ctype_load(const char*, locale_t);