diff --git a/sys/dev/mii/miivar.h b/sys/dev/mii/miivar.h
index f6c759c40e93..f1d16f705a88 100644
--- a/sys/dev/mii/miivar.h
+++ b/sys/dev/mii/miivar.h
@@ -161,6 +161,9 @@ struct mii_phydesc {
 	u_int32_t mpd_model;		/* the PHY's model */
 	const char *mpd_name;		/* the PHY's name */
 };
+#define MII_PHY_DESC(a, b) { MII_OUI_ ## a, MII_MODEL_ ## a ## _ ## b, \
+	MII_STR_ ## a ## _ ## b }
+#define MII_PHY_END	{ 0, 0, NULL }
 
 /*
  * An array of these structures map MII media types to BMCR/ANAR settings.
diff --git a/sys/dev/mii/nsgphy.c b/sys/dev/mii/nsgphy.c
index 259739e15a81..625b2e628e85 100644
--- a/sys/dev/mii/nsgphy.c
+++ b/sys/dev/mii/nsgphy.c
@@ -101,14 +101,9 @@ static int	nsgphy_service(struct mii_softc *, struct mii_data *,int);
 static void	nsgphy_status(struct mii_softc *);
 
 const struct mii_phydesc gphyters[] = {
-	{ MII_OUI_NATSEMI,		MII_MODEL_NATSEMI_DP83861,
-	  MII_STR_NATSEMI_DP83861 },
-
-	{ MII_OUI_NATSEMI,		MII_MODEL_NATSEMI_DP83891,
-	  MII_STR_NATSEMI_DP83891 },
-
-	{ 0,				0,
-	  NULL },
+	MII_PHY_DESC(NATSEMI, DP83861),
+	MII_PHY_DESC(NATSEMI, DP83891),
+	MII_PHY_END
 };
 
 static int