diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index cf30680..8c8de27 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -1922,7 +1922,7 @@
 	if (free_space < (full_space >> 1)) {
 		icsk->icsk_ack.quick = 0;
 
-		if (tcp_memory_pressure)
+		if (sk_under_memory_pressure(sk))
 			tp->rcv_ssthresh = min(tp->rcv_ssthresh,
 					       4U * tp->advmss);