diff --git a/drivers/net/phy/fixed.c b/drivers/net/phy/fixed.c
index 1fa4d73c3cca5e0d6ff4579abd986a910ab67305..633680d0828e64b2c96b2a335713eb17e62490bf 100644
--- a/drivers/net/phy/fixed.c
+++ b/drivers/net/phy/fixed.c
@@ -220,7 +220,7 @@ static int __init fixed_mdio_bus_init(void)
 		goto err_mdiobus_reg;
 	}
 
-	snprintf(fmb->mii_bus->id, MII_BUS_ID_SIZE, "0");
+	snprintf(fmb->mii_bus->id, MII_BUS_ID_SIZE, "fixed-0");
 	fmb->mii_bus->name = "Fixed MDIO Bus";
 	fmb->mii_bus->priv = fmb;
 	fmb->mii_bus->parent = &pdev->dev;