diff --git a/openwrt/files/etc/sysctl.conf b/openwrt/files/etc/sysctl.conf
index 555c2fa..b3bfe3b 100644
--- a/openwrt/files/etc/sysctl.conf
+++ b/openwrt/files/etc/sysctl.conf
@@ -4,7 +4,7 @@ net.ipv4.conf.all.arp_ignore=1
 net.ipv4.ip_forward=1
 net.ipv4.icmp_echo_ignore_broadcasts=1
 net.ipv4.icmp_ignore_bogus_error_responses=1
-net.ipv4.tcp_ecn=1
+net.ipv4.tcp_ecn=0
 net.ipv4.tcp_fin_timeout=30
 net.ipv4.tcp_keepalive_time=120
 net.ipv4.tcp_syncookies=1