diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 3fa80aaf4..202a3b0 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -727,7 +727,7 @@
 	return &vpdp;
 }
 
-static struct tty_operations rio_ops = {
+static const struct tty_operations rio_ops = {
 	.open = riotopen,
 	.close = gs_close,
 	.write = gs_write,