diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index d67fb1ef751edc270eaa832d4048c8bff4faa5a0..f10f3689d6710274f90676c8dccc68d1fc1dc43d 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -633,6 +633,7 @@ static int tcp_v6_md5_do_del(struct sock *sk, struct in6_addr *peer)
 			if (tp->md5sig_info->entries6 == 0) {
 				kfree(tp->md5sig_info->keys6);
 				tp->md5sig_info->keys6 = NULL;
+				tp->md5sig_info->alloced6 = 0;
 
 				tcp_free_md5sig_pool();