diff --git a/man2/fsync.2 b/man2/fsync.2
index 5300f4dbf..34471477f 100644
--- a/man2/fsync.2
+++ b/man2/fsync.2
@@ -168,6 +168,7 @@ to guarantee safe operation.
 .BR pwritev (2),
 .BR sync (2),
 .BR sync_file_range (2),
+.BR fflush (3),
 .BR fileno (3),
 .BR hdparm (8),
 .BR mount (8)