diff --git a/package/lean/shortcut-fe/fast-classifier/src/fast-classifier.c b/package/lean/shortcut-fe/fast-classifier/src/fast-classifier.c
index 944dfae38..415c6f584 100644
--- a/package/lean/shortcut-fe/fast-classifier/src/fast-classifier.c
+++ b/package/lean/shortcut-fe/fast-classifier/src/fast-classifier.c
@@ -468,7 +468,7 @@ static int fast_classifier_update_protocol(struct sfe_connection_create *p_sic,
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
 	net = nf_ct_net(ct);
 	tn = nf_tcp_pernet(net);
-	if ((tn&&tn->tcp_no_window_check)
+	if ((tn&&tn->tcp_be_liberal)
 #else
 	if (nf_ct_tcp_no_window_check
 #endif
diff --git a/package/lean/shortcut-fe/shortcut-fe/src/sfe_cm.c b/package/lean/shortcut-fe/shortcut-fe/src/sfe_cm.c
index 2d3f79a04..8946b837c 100644
--- a/package/lean/shortcut-fe/shortcut-fe/src/sfe_cm.c
+++ b/package/lean/shortcut-fe/shortcut-fe/src/sfe_cm.c
@@ -504,7 +504,7 @@ static unsigned int sfe_cm_post_routing(struct sk_buff *skb, int is_v4)
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0)
 	net = nf_ct_net(ct);
 	tn = nf_tcp_pernet(net);
-	if ((tn&&tn->tcp_no_window_check)
+	if ((tn&&tn->tcp_be_liberal)
 #else
 	if (nf_ct_tcp_no_window_check
 #endif