diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c
index f9d212583ea2a3f9d4bf4f30df6a0b3c9ecd5036..161a03e0c002d7b15b6a57fa271e7e2c8968bf64 100644
--- a/net/sched/cls_cgroup.c
+++ b/net/sched/cls_cgroup.c
@@ -103,7 +103,7 @@ static struct cftype ss_files[] = {
 	{ }	/* terminate */
 };
 
-struct cgroup_subsys net_cls_subsys = {
+static struct cgroup_subsys net_cls_subsys = {
 	.name		= "net_cls",
 	.css_alloc	= cgrp_css_alloc,
 	.css_online	= cgrp_css_online,