diff --git a/security/keys/sysctl.c b/security/keys/sysctl.c
index b72b82bb20c6..b348e1679d5d 100644
--- a/security/keys/sysctl.c
+++ b/security/keys/sysctl.c
@@ -9,7 +9,7 @@
 #include <linux/sysctl.h>
 #include "internal.h"
 
-struct ctl_table key_sysctls[] = {
+static struct ctl_table key_sysctls[] = {
 	{
 		.procname = "maxkeys",
 		.data = &key_quota_maxkeys,