diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index cd15ec73073e..01066aa7e67d 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -370,6 +370,7 @@ void mptcp_get_options(const struct sk_buff *skb,
 
 	/* initialize option status */
 	mp_opt->suboptions = 0;
+	mp_opt->use_ack = 0;
 
 	length = (th->doff * 4) - sizeof(struct tcphdr);
 	ptr = (const unsigned char *)(th + 1);