diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index ab3f272a0884..e33258d69246 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1338,7 +1338,7 @@ int __udp_enqueue_schedule_skb(struct sock *sk, struct sk_buff *skb)
 	 * queue contains some other skb
 	 */
 	rmem = atomic_add_return(size, &sk->sk_rmem_alloc);
-	if (rmem > (size + sk->sk_rcvbuf))
+	if (rmem > (size + (unsigned int)sk->sk_rcvbuf))
 		goto uncharge_drop;
 
 	spin_lock(&list->lock);