diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c
index 9905b52..d0c165d 100644
--- a/drivers/net/dummy.c
+++ b/drivers/net/dummy.c
@@ -356,7 +356,8 @@
 	dev->max_mtu = ETH_MAX_MTU;
 }
 
-static int dummy_validate(struct nlattr *tb[], struct nlattr *data[])
+static int dummy_validate(struct nlattr *tb[], struct nlattr *data[],
+			  struct netlink_ext_ack *extack)
 {
 	if (tb[IFLA_ADDRESS]) {
 		if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)