diff --git a/lib/libc/sys/nanosleep.2 b/lib/libc/sys/nanosleep.2
index 0cbcc0812e52..c169604518d2 100644
--- a/lib/libc/sys/nanosleep.2
+++ b/lib/libc/sys/nanosleep.2
@@ -1,4 +1,4 @@
-.\"	$Id: nanosleep.2,v 1.3 1997/08/21 19:44:41 bde Exp $
+.\"	$Id: nanosleep.2,v 1.4 1997/09/29 19:11:21 wosch Exp $
 .\"	$OpenBSD: nanosleep.2,v 1.1 1997/04/20 20:56:20 tholo Exp $
 .\"	$NetBSD: nanosleep.2,v 1.1 1997/04/17 18:12:02 jtc Exp $
 .\"
@@ -116,5 +116,5 @@ function conforms to
 .Pp
 The
 .Fn signanosleep
-function is an extenstion that first appeared in
+function is an extension that first appeared in
 .Fx 3.0