diff --git a/[refs] b/[refs]
index c240bd84a4c0..7d5c3fc713ee 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 66c6f529c31e2886536aad4b2320d566deb1f150
+refs/heads/master: 5e57dff2c49956e24f27f9b6d2ec0db967680c39
diff --git a/trunk/net/core/netpoll.c b/trunk/net/core/netpoll.c
index 8be3681d3d80..3c58846fcaa5 100644
--- a/trunk/net/core/netpoll.c
+++ b/trunk/net/core/netpoll.c
@@ -296,7 +296,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 					udp_len, IPPROTO_UDP,
 					csum_partial((unsigned char *)udph, udp_len, 0));
 	if (udph->check == 0)
-		udph->check = -1;
+		udph->check = CSUM_MANGLED_0;
 
 	skb->nh.iph = iph = (struct iphdr *)skb_push(skb, sizeof(*iph));