diff --git a/resources/js/components/Listing/Listing.vue b/resources/js/components/Listing/Listing.vue
index ae4e33629..02811642c 100644
--- a/resources/js/components/Listing/Listing.vue
+++ b/resources/js/components/Listing/Listing.vue
@@ -150,10 +150,7 @@ export default {
                 return this.baseFilters().concat([
                     {
                         query_string: {
-                            query:
-                                '(visibility:(2 OR 4) OR (NOT _exists_:visibility)) AND (category_ids:' +
-                                this.categoryId +
-                                ' OR (NOT _exists_:category_ids))',
+                            query: `(visibility:(2 OR 4) OR (NOT _exists_:visibility)) AND (category_ids:${this.categoryId})`,
                         },
                     },
                 ])