diff --git a/auto-upgrade.nix b/auto-upgrade.nix
index 4bbf1b2..20e74fa 100644
--- a/auto-upgrade.nix
+++ b/auto-upgrade.nix
@@ -67,7 +67,7 @@ let cfg = config.system.autoUpgrade; in
 
   };
 
-  config = {
+  config = lib.mkIf cfg.enable {
 
     system.autoUpgrade.flags =
       [ "--no-build-output" ]