diff --git a/nixos/modules/services/web-apps/stash.nix b/nixos/modules/services/web-apps/stash.nix
index fdd01140cd7d..3d7f399ca280 100644
--- a/nixos/modules/services/web-apps/stash.nix
+++ b/nixos/modules/services/web-apps/stash.nix
@@ -167,7 +167,7 @@ let
             presets.recentlyAddedImages
           ]
         '';
-        apply = type: if builtins.isFunction type then (type uiPresets) else type;
+        apply = type: if lib.isFunction type then (type uiPresets) else type;
       };
       blobs_path = mkOption {
         type = types.path;