diff --git a/src/bowser.js b/src/bowser.js
index efebf7d..57c6762 100644
--- a/src/bowser.js
+++ b/src/bowser.js
@@ -539,6 +539,7 @@
    *
    * @param  {Object} minVersions map of minimal version to browser
    * @param  {Boolean} [strictMode = false] flag to return false if browser wasn't found in map
+   * @param  {String}  [ua] user agent string
    * @return {Boolean}
    */
   function check(minVersions, strictMode, ua) {