diff --git a/index.js b/index.js
index 05d42f3..98b6597 100644
--- a/index.js
+++ b/index.js
@@ -109,14 +109,19 @@ function check_filters (filters, e, or = false) {
  * @type {object}
  * @property {string|string[]} field - fields to apply filter on
  * @property {RegExp} filter - filter
- * @property {Filter[]} or - create an OR group of filters
+ */
+
+/**
+ * @typedef FilterOrGroup
+ * @type {object}
+ * @property {(Filter|FilterOrGroup)[]} or - create an OR group of filters
  */
 
 /**
  * filter nested objects
  *
  * @param {Array<object>} input
- * @param {Filter[]} filters
+ * @param {(Filter|FilterOrGroup)[]} filters
  * @returns {Array<object>} filtered data
  */
 function recursive_filter (input, filters, children_key = 'children') {