diff --git a/lib/C/kernel/nf2_ethtool.c b/lib/C/kernel/nf2_ethtool.c
index 092ab749..8c410ac8 100644
--- a/lib/C/kernel/nf2_ethtool.c
+++ b/lib/C/kernel/nf2_ethtool.c
@@ -86,20 +86,14 @@ static void nf2_get_drvinfo(struct net_device *dev,
 
 }
 
-static int nf2_phys_id(struct net_device *dev, __u32 data)
-{
-	return 0;
-}
-
 static const struct ethtool_ops nf2_ethtool_ops = {
 	.get_settings		= nf2_get_settings,
 	.set_settings		= nf2_set_settings,
 	.get_drvinfo		= nf2_get_drvinfo,
 	.get_link		= ethtool_op_get_link,
-	.phys_id		= nf2_phys_id,
 };
 
 void nf2_set_ethtool_ops(struct net_device *dev)
 {
-	SET_ETHTOOL_OPS(dev, &nf2_ethtool_ops);
+	dev->ethtool_ops = &nf2_ethtool_ops;
 }