diff --git a/nixos/tests/nixos-rebuild-specialisations.nix b/nixos/tests/nixos-rebuild-specialisations.nix
index 9192b8a8a030..ab67bbaba676 100644
--- a/nixos/tests/nixos-rebuild-specialisations.nix
+++ b/nixos/tests/nixos-rebuild-specialisations.nix
@@ -21,6 +21,8 @@ import ./make-test-python.nix ({ pkgs, ... }: {
         pkgs.grub2
       ];
 
+      system.switch.enable = true;
+
       virtualisation = {
         cores = 2;
         memorySize = 4096;