1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 02940c0fef68..459443b572ce 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -81,7 +81,7 @@ int mdiobus_register(struct mii_bus *bus)
 
                         phydev->dev.parent = bus->dev;
                         phydev->dev.bus = &mdio_bus_type;
-                        sprintf(phydev->dev.bus_id, "phy%d:%d", bus->id, i);
+                        snprintf(phydev->dev.bus_id, BUS_ID_SIZE, PHY_ID_FMT, bus->id, i);
 
                         phydev->bus = bus;