diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index 8ea261b8c022..1e215cf5ad03 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -141,7 +141,7 @@ static const struct tty_operations serial_ops = {
 	.proc_show = rs_proc_show,
 };
 
-int __init rs_init(void)
+static int __init rs_init(void)
 {
 	tty_port_init(&serial_port);