diff --git a/docs/admin/sysctls.md b/docs/admin/sysctls.md
index c1785383794d9..dc62b8c3d10eb 100644
--- a/docs/admin/sysctls.md
+++ b/docs/admin/sysctls.md
@@ -68,7 +68,6 @@ For Kubernetes 1.4, the following sysctls are supported in the _safe_ set:
 
 - `kernel.shm_rmid_forced`,
 - `net.ipv4.ip_local_port_range`,
-- `net.ipv4.tcp_max_syn_backlog`,
 - `net.ipv4.tcp_syncookies`.
 
 This list will be extended in future Kubernetes versions when the kubelet