diff --git a/net/decnet/dn_nsp_in.c b/net/decnet/dn_nsp_in.c
index f6544b2..58084f3 100644
--- a/net/decnet/dn_nsp_in.c
+++ b/net/decnet/dn_nsp_in.c
@@ -588,7 +588,7 @@
 	   number of warnings when compiling with -W --ANK
 	 */
 	if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
-	    (unsigned)sk->sk_rcvbuf) {
+	    (unsigned int)sk->sk_rcvbuf) {
 		err = -ENOMEM;
 		goto out;
 	}