diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index 8b7e118..8b3b0f4 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -147,7 +147,7 @@
 	return seq_open(file, &dasd_devices_seq_ops);
 }
 
-static struct file_operations dasd_devices_file_ops = {
+static const struct file_operations dasd_devices_file_ops = {
 	.open		= dasd_devices_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,