diff --git a/modules/misc/nixpkgs.nix b/modules/misc/nixpkgs.nix
index 021986bc8959..03979e259bf6 100644
--- a/modules/misc/nixpkgs.nix
+++ b/modules/misc/nixpkgs.nix
@@ -76,7 +76,7 @@ in
     # FIXME
     nixpkgs.config.packageOverrides = pkgs: {
       #udev = pkgs.systemd;
-      slim = pkgs.slim.override { consolekit = null; };
+      slim = pkgs.slim.override (args: if args ? consolekit then { consolekit = null; } else { });
       lvm2 = pkgs.lvm2.override { udev = pkgs.systemd; };
       upower = pkgs.upower.override { useSystemd = true; };
       polkit = pkgs.polkit.override { useSystemd = true; };