diff --git a/usr.bin/lockf/lockf.1 b/usr.bin/lockf/lockf.1
index 57119e53768..e6204a1e2cb 100644
--- a/usr.bin/lockf/lockf.1
+++ b/usr.bin/lockf/lockf.1
@@ -162,6 +162,7 @@ but may have been signaled or stopped.
 .El
 .Sh SEE ALSO
 .Xr flock 2 ,
+.Xr lockf 3 ,
 .Xr sysexits 3
 .Sh HISTORY
 A