diff --git a/nixos/tests/packagekit.nix b/nixos/tests/packagekit.nix
index 28d1374bf92c..020a4e65e6d8 100644
--- a/nixos/tests/packagekit.nix
+++ b/nixos/tests/packagekit.nix
@@ -8,7 +8,6 @@ import ./make-test-python.nix ({ pkgs, ... }: {
     environment.systemPackages = with pkgs; [ dbus ];
     services.packagekit = {
       enable = true;
-      backend = "test_nop";
     };
   };