diff --git a/nixos/tests/home-assistant.nix b/nixos/tests/home-assistant.nix
index aec4784e9c5f..8585cb3585fe 100644
--- a/nixos/tests/home-assistant.nix
+++ b/nixos/tests/home-assistant.nix
@@ -112,7 +112,7 @@ in {
   };
 
   testScript = { nodes, ... }: let
-    system = nodes.hass.config.system.build.toplevel;
+    system = nodes.hass.system.build.toplevel;
   in
   ''
     import json