diff --git a/partitions/simple-efi.nix b/partitions/simple-efi.nix
index f07933f..c00a35b 100644
--- a/partitions/simple-efi.nix
+++ b/partitions/simple-efi.nix
@@ -1,7 +1,7 @@
 {
   disko.devices = {
     disk = {
-      vdb = {
+      vda = {
         #device = "/dev/disk/by-id/some-disk-id";
         type = "disk";
         content = {