diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index dd4d506..2954dcb 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -1808,6 +1808,7 @@
 		rv = (flags & MSG_PEEK) ? -sk->sk_err : sock_error(sk);
 
 	if ((rv >= 0) && msg->msg_name) {
+		__sockaddr_check_size(sizeof(struct sockaddr_dn));
 		memcpy(msg->msg_name, &scp->peer, sizeof(struct sockaddr_dn));
 		msg->msg_namelen = sizeof(struct sockaddr_dn);
 	}
@@ -1914,7 +1915,7 @@
 	int err = 0;
 	size_t sent = 0;
 	int addr_len = msg->msg_namelen;
-	struct sockaddr_dn *addr = (struct sockaddr_dn *)msg->msg_name;
+	DECLARE_SOCKADDR(struct sockaddr_dn *, addr, msg->msg_name);
 	struct sk_buff *skb = NULL;
 	struct dn_skb_cb *cb;
 	size_t len;