diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 0f95405..6527f3f 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -656,7 +656,7 @@
 	.attrs = ccwdev_attrs,
 };
 
-static struct attribute_group *ccwdev_attr_groups[] = {
+static const struct attribute_group *ccwdev_attr_groups[] = {
 	&ccwdev_attr_group,
 	NULL,
 };