diff --git a/include/net/tcp.h b/include/net/tcp.h
index 36c5084..f50f29faf 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -493,7 +493,7 @@
 __u32 cookie_init_timestamp(struct request_sock *req);
 bool cookie_timestamp_decode(struct tcp_options_received *opt);
 bool cookie_ecn_ok(const struct tcp_options_received *opt,
-		   const struct net *net);
+		   const struct net *net, const struct dst_entry *dst);
 
 /* From net/ipv6/syncookies.c */
 int __cookie_v6_check(const struct ipv6hdr *iph, const struct tcphdr *th,