diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index e4e5fe75a2816..75dba309e0434 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -470,7 +470,7 @@ void unregister_pernet_device(struct pernet_operations *);
 struct ctl_table;
 
 #define register_net_sysctl(net, path, table)	\
-	register_net_sysctl_sz(net, path, table, SIZE_MAX)
+	register_net_sysctl_sz(net, path, table, ARRAY_SIZE(table))
 #ifdef CONFIG_SYSCTL
 int net_sysctl_init(void);
 struct ctl_table_header *register_net_sysctl_sz(struct net *net, const char *path,