diff --git a/sysctl.d/50-default.conf b/sysctl.d/50-default.conf
index b67ae87ca6b..e263cf06284 100644
--- a/sysctl.d/50-default.conf
+++ b/sysctl.d/50-default.conf
@@ -33,9 +33,6 @@ net.ipv4.conf.all.promote_secondaries = 1
 # Fair Queue CoDel packet scheduler to fight bufferbloat
 net.core.default_qdisc = fq_codel
 
-# Request Explicit Congestion Notification (ECN) on both in and outgoing connections
-net.ipv4.tcp_ecn = 1
-
 # Enable hard and soft link protection
 fs.protected_hardlinks = 1
 fs.protected_symlinks = 1