diff --git a/drivers/net/phy/marvell.c b/drivers/net/phy/marvell.c
index 4d02b27df0445e7c1ad6f0774e44a5b7013bb05e..b5a8f750e4337ce04fc46b3cf784cf84a2c42c77 100644
--- a/drivers/net/phy/marvell.c
+++ b/drivers/net/phy/marvell.c
@@ -637,6 +637,10 @@ static int m88e1510_config_aneg(struct phy_device *phydev)
 	if (err < 0)
 		goto error;
 
+	/* Do not touch the fiber page if we're in copper->sgmii mode */
+	if (phydev->interface == PHY_INTERFACE_MODE_SGMII)
+		return 0;
+
 	/* Then the fiber link */
 	err = marvell_set_page(phydev, MII_MARVELL_FIBER_PAGE);
 	if (err < 0)