diff --git a/templates/nix-config/disks/mirror.nix b/templates/nix-config/disks/mirror.nix
index f24d208..cd0e593 100644
--- a/templates/nix-config/disks/mirror.nix
+++ b/templates/nix-config/disks/mirror.nix
@@ -35,10 +35,8 @@
       raid1 = {
         type = "mdadm";
         level = 1;
-        settings = {
-          startOptions = [ "--run" "--bitmap=internal" ];
-          mdadmMetadata = "1.2";
-        };
+        metadata = "1.2";
+        bitmap = "internal";
         content = {
           type = "luks";
           name = "crypted-mirror";