diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 464e9c1c16..8c4eef9c44 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -19619,8 +19619,9 @@ postgres=# SELECT * FROM pg_walfile_name_offset(pg_stop_backup());
         <type>oid</type>
        </entry>
        <entry>
-        Lookup a replication origin by name and return the internal id. If no
-        corresponding replication origin is found an error is thrown.
+        Lookup a replication origin by name and return the internal ID. If
+        no such replication origin is found, <literal>NULL</literal> is
+        returned.
        </entry>
       </row>