diff --git a/drivers/net/natsemi.c b/drivers/net/natsemi.c
index 51cc1e6..d7b241f 100644
--- a/drivers/net/natsemi.c
+++ b/drivers/net/natsemi.c
@@ -647,7 +647,7 @@
 static int netdev_close(struct net_device *dev);
 static int netdev_get_regs(struct net_device *dev, u8 *buf);
 static int netdev_get_eeprom(struct net_device *dev, u8 *buf);
-static struct ethtool_ops ethtool_ops;
+static const struct ethtool_ops ethtool_ops;
 
 static inline void __iomem *ns_ioaddr(struct net_device *dev)
 {
@@ -2573,7 +2573,7 @@
 	return res;
 }
 
-static struct ethtool_ops ethtool_ops = {
+static const struct ethtool_ops ethtool_ops = {
 	.get_drvinfo = get_drvinfo,
 	.get_regs_len = get_regs_len,
 	.get_eeprom_len = get_eeprom_len,