diff --git a/lib/Models/Catalog/CatalogItems/MapboxVectorTileCatalogItem.ts b/lib/Models/Catalog/CatalogItems/MapboxVectorTileCatalogItem.ts
index 95ff303c58..3efd4207a7 100644
--- a/lib/Models/Catalog/CatalogItems/MapboxVectorTileCatalogItem.ts
+++ b/lib/Models/Catalog/CatalogItems/MapboxVectorTileCatalogItem.ts
@@ -146,11 +146,11 @@ class MapboxVectorTileCatalogItem extends MappableMixin(
     }
   }
 
-  @computed
   /** Convert traits into paint rules:
    * - `layer` and `fillColor`/`lineColor` into simple rules
    * - `parsedJsonStyle`
    */
+  @computed
   get paintRules(): PaintRule[] {
     const rules: PaintRule[] = [];