diff --git a/modules/nix/default.nix b/modules/nix/default.nix
index d191cba..7887056 100644
--- a/modules/nix/default.nix
+++ b/modules/nix/default.nix
@@ -18,7 +18,7 @@ systemConfiguration {
     registry = (lib.filterAttrs
       (name: value: value != {})
       (builtins.mapAttrs
-        (name: value: lib.mkIf (value ? "sourceInfo") {
+        (name: value: lib.mkIf (value ? sourceInfo) {
           flake = value;
         }) inputs)) // { default.flake = inputs.nixpkgs; };