diff --git a/coreos-1.json b/coreos-1.json
index f999258..76c114e 100644
--- a/coreos-1.json
+++ b/coreos-1.json
@@ -32,7 +32,7 @@
     ],
     "disks": [
       {
-        "device": "/dev/sda",
+        "device": "/dev/vda",
         "partitions": [
           {
             "label": "root",