diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index adecbe2800b89b96164548a3fe1137033a141b39..43e72e6b24ae43e5939352eabd05f5df255a8d72 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1409,7 +1409,7 @@ 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);