diff --git a/share/man/man9/kauth.9 b/share/man/man9/kauth.9
index 35bb64e40fb7..fe6ae432257c 100644
--- a/share/man/man9/kauth.9
+++ b/share/man/man9/kauth.9
@@ -1,4 +1,4 @@
-.\" $NetBSD: kauth.9,v 1.8 2006/07/17 17:17:58 elad Exp $
+.\" $NetBSD: kauth.9,v 1.9 2006/07/20 18:40:28 elad Exp $
 .\"
 .\" Copyright (c) 2005, 2006 Elad Efrat <elad@NetBSD.org>
 .\" All rights reserved.
@@ -28,7 +28,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd July 17, 2006
+.Dd July 20, 2006
 .Dt KAUTH 9
 .Os
 .Sh NAME
@@ -548,6 +548,9 @@ the future.
 Then, the code should wait (possibly sleeping) until the reference count
 drops to zero.
 When that happens, it is safe to do the final cleanup.
+.Pp
+Listeners, especially ones that are to be attached to any of the built-in
+scopes, cannot sleep.
 .\".Sh EXAMPLES
 .\" .Sh SEE ALSO
 .Sh HISTORY