diff --git a/include/net/tcp.h b/include/net/tcp.h
index aaf1d5d5a13b..8459145497b7 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1389,7 +1389,7 @@ void tcp_select_initial_window(const struct sock *sk, int __space,
 
 static inline int tcp_win_from_space(const struct sock *sk, int space)
 {
-	int tcp_adv_win_scale = sock_net(sk)->ipv4.sysctl_tcp_adv_win_scale;
+	int tcp_adv_win_scale = READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_adv_win_scale);
 
 	return tcp_adv_win_scale <= 0 ?
 		(space>>(-tcp_adv_win_scale)) :