diff --git a/stylix/meta.nix b/stylix/meta.nix
index 20315d7b..9a6763a6 100644
--- a/stylix/meta.nix
+++ b/stylix/meta.nix
@@ -5,10 +5,10 @@
 builtins.mapAttrs
   (
     _: value:
-    if (builtins.typeOf value == "lambda") then
+    if builtins.isFunction value then
       (value {
         inherit pkgs;
-        lib = pkgs.lib.extend (
+        lib = lib.extend (
           _: prev: {
             maintainers = lib.attrsets.unionOfDisjoint prev.maintainers (import ./maintainers.nix);
           }