diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index d8b6619ae0..67441d4ea7 100644
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -277,12 +277,13 @@ uint tsec_local_mdio_read(volatile tsec_mdio_t *phyregs, uint phyid, uint regnum
 		| TBIANA_FULL_DUPLEX \
 		)
 
+/* Force the TBI PHY into 1000Mbps full duplex when in SGMII mode */
 #define TBICR_SETTINGS ( \
 		TBICR_PHY_RESET \
-		| TBICR_ANEG_ENABLE \
 		| TBICR_FULL_DUPLEX \
 		| TBICR_SPEED1_SET \
 		)
+
 /* Configure the TBI for SGMII operation */
 static void tsec_configure_serdes(struct tsec_private *priv)
 {