diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index c51354d81df..6d55d0616b7 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -20034,6 +20034,7 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
     be <literal>pg_catalog</literal>, but that is not a requirement;
     the collations could be installed into some other schema as well.
     The function returns the number of new collation objects it created.
+    Use of this function is restricted to superusers.
    </para>
 
   </sect2>