diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 50e29737b584624b6d338630622e87634961612e..0b024178edd39a6bc460892ac190095b4dfabbd9 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -911,6 +911,7 @@ static int __ip_append_data(struct sock *sk,
 	if (transhdrlen &&
 	    length + fragheaderlen <= mtu &&
 	    rt->dst.dev->features & NETIF_F_V4_CSUM &&
+	    !(flags & MSG_MORE) &&
 	    !exthdrlen)
 		csummode = CHECKSUM_PARTIAL;