diff --git a/nixos/tests/virtualbox.nix b/nixos/tests/virtualbox.nix
index da4c0bddc348..06efb034c086 100644
--- a/nixos/tests/virtualbox.nix
+++ b/nixos/tests/virtualbox.nix
@@ -326,6 +326,7 @@ let
       in [ ./common/user-account.nix ./common/x11.nix ] ++ vmConfigs;
       virtualisation.memorySize = 2048;
       virtualisation.virtualbox.host.enable = true;
+      services.xserver.displayManager.auto.user = "alice";
       users.extraUsers.alice.extraGroups = let
         inherit (config.virtualisation.virtualbox.host) enableHardening;
       in lib.mkIf enableHardening (lib.singleton "vboxusers");