diff --git a/drivers/char/watchdog/ibmasr.c b/drivers/char/watchdog/ibmasr.c
index b0741cb..26ceee7 100644
--- a/drivers/char/watchdog/ibmasr.c
+++ b/drivers/char/watchdog/ibmasr.c
@@ -322,7 +322,7 @@
 	return 0;
 }
 
-static struct file_operations asr_fops = {
+static const struct file_operations asr_fops = {
 	.owner =	THIS_MODULE,
 	.llseek	=	no_llseek,
 	.write =	asr_write,