diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 6aef1e9..9d07d2d 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10993,7 +10993,7 @@
 	struct net_device *dev = tp->dev;
 	struct pci_dev *pdev = tp->pdev;
 	struct device_node *dp = pci_device_to_OF_node(pdev);
-	unsigned char *addr;
+	const unsigned char *addr;
 	int len;
 
 	addr = of_get_property(dp, "local-mac-address", &len);