diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index e463583..65e797d 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -622,8 +622,12 @@
 	return 1;
 }
 
-static bool tcp_v6_inbound_md5_hash(struct sock *sk, const struct sk_buff *skb)
+#endif
+
+static bool tcp_v6_inbound_md5_hash(const struct sock *sk,
+				    const struct sk_buff *skb)
 {
+#ifdef CONFIG_TCP_MD5SIG
 	const __u8 *hash_location = NULL;
 	struct tcp_md5sig_key *hash_expected;
 	const struct ipv6hdr *ip6h = ipv6_hdr(skb);
@@ -660,9 +664,9 @@
 				     &ip6h->daddr, ntohs(th->dest));
 		return true;
 	}
+#endif
 	return false;
 }
-#endif
 
 static void tcp_v6_init_req(struct request_sock *req,
 			    const struct sock *sk_listener,
@@ -1408,10 +1412,8 @@
 
 	tcp_v6_fill_cb(skb, hdr, th);
 
-#ifdef CONFIG_TCP_MD5SIG
 	if (tcp_v6_inbound_md5_hash(sk, skb))
 		goto discard_and_relse;
-#endif
 
 	if (sk_filter(sk, skb))
 		goto discard_and_relse;