diff --git a/drivers/virtio/Makefile b/drivers/virtio/Makefile
index 23e7be7..17d264a 100644
--- a/drivers/virtio/Makefile
+++ b/drivers/virtio/Makefile
@@ -3,4 +3,4 @@
 # Copyright (C) 2018, Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
 # Copyright (C) 2018, Bin Meng <bmeng.cn@gmail.com>
 
-obj-y += virtio-uclass.o
+obj-y += virtio-uclass.o virtio_ring.o