diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index bc67f6b9efae46..a19a9dbd3409fe 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -514,9 +514,6 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
 	const struct tcp_sock *oldtp;
 	struct tcp_sock *newtp;
 	u32 seq;
-#ifdef CONFIG_TCP_AO
-	struct tcp_ao_key *ao_key;
-#endif
 
 	if (!newsk)
 		return NULL;
@@ -607,10 +604,14 @@ struct sock *tcp_create_openreq_child(const struct sock *sk,
 #endif
 #ifdef CONFIG_TCP_AO
 	newtp->ao_info = NULL;
-	ao_key = treq->af_specific->ao_lookup(sk, req,
-				tcp_rsk(req)->ao_keyid, -1);
-	if (ao_key)
-		newtp->tcp_header_len += tcp_ao_len_aligned(ao_key);
+
+	if (tcp_rsk_used_ao(req)) {
+		struct tcp_ao_key *ao_key;
+
+		ao_key = treq->af_specific->ao_lookup(sk, req, tcp_rsk(req)->ao_keyid, -1);
+		if (ao_key)
+			newtp->tcp_header_len += tcp_ao_len_aligned(ao_key);
+	}
  #endif
 	if (skb->len >= TCP_MSS_DEFAULT + newtp->tcp_header_len)
 		newicsk->icsk_ack.last_seg_size = skb->len - newtp->tcp_header_len;