diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 7e74011..aff3142 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2014,7 +2014,7 @@
 
 	if (tp->rx_opt.tstamp_ok)
 		info->tcpi_options |= TCPI_OPT_TIMESTAMPS;
-	if (tp->rx_opt.sack_ok)
+	if (tcp_is_sack(tp))
 		info->tcpi_options |= TCPI_OPT_SACK;
 	if (tp->rx_opt.wscale_ok) {
 		info->tcpi_options |= TCPI_OPT_WSCALE;