diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 05a31e5..a84702d 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -1050,7 +1050,7 @@
 };
 
 
-static struct xenbus_device_id blkfront_ids[] = {
+static const struct xenbus_device_id blkfront_ids[] = {
 	{ "vbd" },
 	{ "" }
 };