diff --git a/include/linux/of_net.h b/include/linux/of_net.h
index 9cd72aab76fe..0f0346e6829c 100644
--- a/include/linux/of_net.h
+++ b/include/linux/of_net.h
@@ -22,7 +22,7 @@ static inline int of_get_phy_mode(struct device_node *np)
 
 static inline const void *of_get_mac_address(struct device_node *np)
 {
-	return NULL;
+	return ERR_PTR(-ENODEV);
 }
 
 static inline struct net_device *of_find_net_device_by_node(struct device_node *np)