diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 99f7aae102ce12a15155c84d888af04229e80c85..adc8c8f3b5fc613bca4e57a40a90010eee76cfd7 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -162,7 +162,7 @@ static int ravb_get_mdio_data(struct mdiobb_ctrl *ctrl)
 }
 
 /* MDIO bus control struct */
-static struct mdiobb_ops bb_ops = {
+static const struct mdiobb_ops bb_ops = {
 	.owner = THIS_MODULE,
 	.set_mdc = ravb_set_mdc,
 	.set_mdio_dir = ravb_set_mdio_dir,