diff --git a/changelog.txt b/changelog.txt
index 3fb0703c..d9154a76 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -7,6 +7,7 @@ OPENSEADRAGON CHANGELOG
 * DEPRECATION: The OpenSeadragon.createCallback function is no longer recommended (#2367 @akansjain)
 * Fixed: Sometimes if the viewport was flipped and the user zoomed in far enough, it would flip back (#2364 @SebDelile)
 * Test improvements (#2382 @AndrewADev)
+* MouseTracker options documentation fixes (#2389 @msalsbery)
 
 4.1.0:
 
diff --git a/src/mousetracker.js b/src/mousetracker.js
index 8fa2b31c..20200b31 100644
--- a/src/mousetracker.js
+++ b/src/mousetracker.js
@@ -57,16 +57,16 @@
      * @param {Boolean} [options.startDisabled=false]
      *      If true, event tracking on the element will not start until
      *      {@link OpenSeadragon.MouseTracker.setTracking|setTracking} is called.
-     * @param {Number} options.clickTimeThreshold
+     * @param {Number} [options.clickTimeThreshold=300]
      *      The number of milliseconds within which a pointer down-up event combination
      *      will be treated as a click gesture.
-     * @param {Number} options.clickDistThreshold
+     * @param {Number} [options.clickDistThreshold=5]
      *      The maximum distance allowed between a pointer down event and a pointer up event
      *      to be treated as a click gesture.
-     * @param {Number} options.dblClickTimeThreshold
+     * @param {Number} [options.dblClickTimeThreshold=300]
      *      The number of milliseconds within which two pointer down-up event combinations
      *      will be treated as a double-click gesture.
-     * @param {Number} options.dblClickDistThreshold
+     * @param {Number} [options.dblClickDistThreshold=20]
      *      The maximum distance allowed between two pointer click events
      *      to be treated as a click gesture.
      * @param {Number} [options.stopDelay=50]