diff --git a/src/backend/access/transam/xlogfuncs.c b/src/backend/access/transam/xlogfuncs.c
index b3223d6..463f668 100644
--- a/src/backend/access/transam/xlogfuncs.c
+++ b/src/backend/access/transam/xlogfuncs.c
@@ -448,8 +448,7 @@ pg_last_wal_replay_lsn(PG_FUNCTION_ARGS)
 }

 /*
- * Compute an xlog file name and decimal byte offset given a WAL location,
- * such as is returned by pg_stop_backup() or pg_xlog_switch().
+ * Compute an xlog file name and decimal byte offset given a WAL location.
  *
  * Note that a location exactly at a segment boundary is taken to be in
  * the previous segment.  This is usually the right thing, since the
@@ -514,8 +513,7 @@ pg_walfile_name_offset(PG_FUNCTION_ARGS)
 }

 /*
- * Compute an xlog file name given a WAL location,
- * such as is returned by pg_stop_backup() or pg_xlog_switch().
+ * Compute an xlog file name given a WAL location.
  */
 Datum
 pg_walfile_name(PG_FUNCTION_ARGS)