diff --git a/drivers/char/sx.c b/drivers/char/sx.c
index 45c193a..e1cd2bc 100644
--- a/drivers/char/sx.c
+++ b/drivers/char/sx.c
@@ -410,7 +410,7 @@
  *
  */
 
-static struct file_operations sx_fw_fops = {
+static const struct file_operations sx_fw_fops = {
 	.owner		= THIS_MODULE,
 	.ioctl		= sx_fw_ioctl,
 };