diff --git a/lib/libc/sys/gettimeofday.2 b/lib/libc/sys/gettimeofday.2
index 6c50b229ccde..1977e9e6cd9f 100644
--- a/lib/libc/sys/gettimeofday.2
+++ b/lib/libc/sys/gettimeofday.2
@@ -1,4 +1,4 @@
-.\"	$NetBSD: gettimeofday.2,v 1.29 2015/12/09 08:30:03 wiz Exp $
+.\"	$NetBSD: gettimeofday.2,v 1.30 2022/10/16 20:37:03 christos Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     @(#)gettimeofday.2	8.2 (Berkeley) 5/26/95
 .\"
-.Dd December 8, 2015
+.Dd October 16, 2022
 .Dt GETTIMEOFDAY 2
 .Os
 .Sh NAME
@@ -133,6 +133,12 @@ The following error codes may be set in
 .Bl -tag -width Er
 .It Bq Er EFAULT
 An argument address referenced invalid memory.
+.It Bq Er EINVAL
+.Fn settimeofday :
+.Ar tp.tv_sec
+is outside the range [0..2^36] or
+.Ar tp.tv_usec
+is outside the range [0..999,999].
 .It Bq Er EPERM
 A user other than the super user attempted to set the time, or the specified
 time was less than the current time, which was not permitted at the current