diff --git a/net/ipv4/ah4.c b/net/ipv4/ah4.c
index 325053d..4286fd3 100644
--- a/net/ipv4/ah4.c
+++ b/net/ipv4/ah4.c
@@ -208,7 +208,7 @@
 
 	ah->reserved = 0;
 	ah->spi = x->id.spi;
-	ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output);
+	ah->seq_no = htonl(XFRM_SKB_CB(skb)->seq.output.low);
 
 	sg_init_table(sg, nfrags);
 	skb_to_sgvec(skb, sg, 0, skb->len);