diff --git a/nixos/lib/testing.nix b/nixos/lib/testing.nix
index 690f7dfd5fa..0bb3fd53e85 100644
--- a/nixos/lib/testing.nix
+++ b/nixos/lib/testing.nix
@@ -1,5 +1,5 @@
 { system
-, pkgs
+, pkgs ? import ../.. { inherit system config; }
   # Use a minimal kernel?
 , minimal ? false
   # Ignored