diff --git a/systems/LoutreOS/configuration.nix b/systems/LoutreOS/configuration.nix
index fb52a444e..5c0f592aa 100644
--- a/systems/LoutreOS/configuration.nix
+++ b/systems/LoutreOS/configuration.nix
@@ -33,7 +33,7 @@ in
   ];
 
   nixpkgs.config.allowUnfree = false;
-  nixpkgs.config.allowUnfreePredicate = (pkg: builtins.elem (builtins.parseDrvName pkg.pname).name [ "factorio-headless" "perl5.30.1-slimserver" "minecraft-server" ]);
+  nixpkgs.config.allowUnfreePredicate = (pkg: builtins.elem pkg.pname or (builtins.parseDrvName pkg.name).name [ "factorio-headless" "perl5.30.1-slimserver" "minecraft-server" ]);
 
   services.zfs = {
     autoSnapshot.enable = true;