diff --git a/nixos/modules/virtualisation/openstack-config.nix b/nixos/modules/virtualisation/openstack-config.nix
index f7806228c65..af4f5746610 100644
--- a/nixos/modules/virtualisation/openstack-config.nix
+++ b/nixos/modules/virtualisation/openstack-config.nix
@@ -1,5 +1,8 @@
 { config, pkgs, lib, ... }:
 
+# image metadata:
+# hw_firmware_type=uefi
+
 let
   inherit (lib) mkIf mkDefault;
   cfg = config.openstack;