diff --git a/block/genhd.c b/block/genhd.c
index 5b76bf5..2ad91dd 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -903,7 +903,7 @@
 	.attrs = disk_attrs,
 };
 
-static struct attribute_group *disk_attr_groups[] = {
+static const struct attribute_group *disk_attr_groups[] = {
 	&disk_attr_group,
 	NULL
 };