diff --git a/share/man/man4/xvif.4 b/share/man/man4/xvif.4
index 65f01ca6e953..a9ec8b2827c0 100644
--- a/share/man/man4/xvif.4
+++ b/share/man/man4/xvif.4
@@ -1,4 +1,4 @@
-.\"	$NetBSD: xvif.4,v 1.3 2011/04/03 23:44:46 jym Exp $
+.\"	$NetBSD: xvif.4,v 1.4 2011/04/06 23:51:56 jym Exp $
 .\"
 .\" Copyright (c) 2011 The NetBSD Foundation, Inc.
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd April 4, 2011
+.Dd April 7, 2011
 .Dt XVIF 4 xen
 .Os
 .Sh NAME
@@ -62,7 +62,7 @@ entries.
 All
 .Nm
 interfaces follow the
-.Dq xvifX-Y
+.Dq xvifXiY
 naming convention, where
 .Sq X
 represents the guest domain identifier, and
@@ -80,12 +80,12 @@ Conceptually, frontends and backends drivers are
 similar to two Ethernet cards connected via a crossover cable.
 .Sh DIAGNOSTICS
 .Bl -diag
-.It "xvif%d-%d: can't read %s/mac: %d"
+.It "xvif%di%d: can't read %s/mac: %d"
 The MAC address for this interface could not be read from XenStore.
-.It "xvif%d-%d: %s is not a valid mac address"
+.It "xvif%di%d: %s is not a valid mac address"
 The MAC address specified in the configuration file of the newly
 created guest domain is invalid.
-.It "xvif%d-%d: Ethernet address %s"
+.It "xvif%di%d: Ethernet address %s"
 MAC address of the
 .Nm
 interface.
diff --git a/sys/arch/xen/xen/xennetback_xenbus.c b/sys/arch/xen/xen/xennetback_xenbus.c
index f634a93308c1..b46bbb815e7c 100644
--- a/sys/arch/xen/xen/xennetback_xenbus.c
+++ b/sys/arch/xen/xen/xennetback_xenbus.c
@@ -1,4 +1,4 @@
-/*      $NetBSD: xennetback_xenbus.c,v 1.39 2011/04/03 23:21:37 jym Exp $      */
+/*      $NetBSD: xennetback_xenbus.c,v 1.40 2011/04/06 23:51:55 jym Exp $      */
 
 /*
  * Copyright (c) 2006 Manuel Bouyer.
@@ -271,7 +271,7 @@ xennetback_xenbus_create(struct xenbus_device *xbusd)
 
 	ifp = &xneti->xni_if;
 	ifp->if_softc = xneti;
-	snprintf(ifp->if_xname, IFNAMSIZ, "xvif%d-%d",
+	snprintf(ifp->if_xname, IFNAMSIZ, "xvif%di%d",
 	    (int)domid, (int)handle);
 
 	/* read mac address */