diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
index afc4ab7cfe016b6a6774e2f69640f28108a0dbc3..8235b86b4e87efdccf73d0f552f0a1a01a9f3763 100644
--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -447,7 +447,7 @@ static void tcp_sack(const struct sk_buff *skb, unsigned int dataoff,
 	BUG_ON(ptr == NULL);
 
 	/* Fast path for timestamp-only option */
-	if (length == TCPOLEN_TSTAMP_ALIGNED*4
+	if (length == TCPOLEN_TSTAMP_ALIGNED
 	    && *(__be32 *)ptr == htonl((TCPOPT_NOP << 24)
 				       | (TCPOPT_NOP << 16)
 				       | (TCPOPT_TIMESTAMP << 8)