diff --git a/ssh.1 b/ssh.1
index b20908a5e..7c71ffcc2 100644
--- a/ssh.1
+++ b/ssh.1
@@ -33,8 +33,8 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.\" $OpenBSD: ssh.1,v 1.396 2018/07/19 10:28:47 dtucker Exp $
-.Dd $Mdocdate: July 19 2018 $
+.\" $OpenBSD: ssh.1,v 1.397 2018/09/07 01:42:54 djm Exp $
+.Dd $Mdocdate: September 7 2018 $
 .Dt SSH 1
 .Os
 .Sh NAME
@@ -391,7 +391,10 @@ options places
 .Nm
 into
 .Dq master
-mode with confirmation required before slave connections are accepted.
+mode but with confirmation required using
+.Xr ssh-askpass 1
+before each operation that changes the multiplexing state
+(e.g. opening a new session).
 Refer to the description of
 .Cm ControlMaster
 in