diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 9d6713a..d0e92ed 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -1958,7 +1958,7 @@
 }
 
 
-static struct tty_operations serial_ops = {
+static const struct tty_operations serial_ops = {
 	.open = rs_open,
 	.close = rs_close,
 	.write = rs_write,