diff --git a/src/js/player.js b/src/js/player.js
index 5790d04ad..31f48469a 100644
--- a/src/js/player.js
+++ b/src/js/player.js
@@ -5246,7 +5246,7 @@ class Player extends Component {
    * Values other than arrays are ignored.
    *
    * @fires Player#playbackrateschange
-   * @param {number[]} newRates
+   * @param {number[]} [newRates]
    *                   The new rates that the playback rates menu should update to.
    *                   An empty array will hide the menu
    * @return {number[]} When used as a getter will return the current playback rates