diff --git a/drivers/char/watchdog/softdog.c b/drivers/char/watchdog/softdog.c
index 79ce5c6..ef8da51 100644
--- a/drivers/char/watchdog/softdog.c
+++ b/drivers/char/watchdog/softdog.c
@@ -243,7 +243,7 @@
  *	Kernel Interfaces
  */
 
-static struct file_operations softdog_fops = {
+static const struct file_operations softdog_fops = {
 	.owner		= THIS_MODULE,
 	.llseek		= no_llseek,
 	.write		= softdog_write,