diff --git a/src/objectliterals.jsdoc b/src/objectliterals.jsdoc
index 349e3ca1a9..afbf5f80d4 100644
--- a/src/objectliterals.jsdoc
+++ b/src/objectliterals.jsdoc
@@ -295,14 +295,16 @@
 
 /**
  * @typedef {Object} ol.parser.KMLOptions
+ * @property {number|undefined} dimension Create geometries with `dimension`
+ *     dimensions. Default is 3.
  * @property {boolean|undefined} extractAttributes Should we extract attributes
  *     from the KML? Default is `true´.
  * @property {boolean|undefined} extractStyles Should we extract styles from the
  *     KML? Default is `false`.
- * @property {number|undefined} dimension Create geometries with `dimension`
- *     dimensions. Default is 3.
  * @property {number|undefined} maxDepth Maximum depth to follow network links.
  *     Default is 0, which means we don't follow network links at all.
+ * @property {Array.<string>|undefined} trackAttributes Track attributes to
+ *     parse.
  */
 
 /**
diff --git a/src/ol/parser/kml.js b/src/ol/parser/kml.js
index 3de797d27f..8be3b5f61a 100644
--- a/src/ol/parser/kml.js
+++ b/src/ol/parser/kml.js
@@ -45,22 +45,18 @@ goog.require('ol.style.PolygonLiteral');
  * @extends {ol.parser.XML}
  */
 ol.parser.KML = function(opt_options) {
-  if (goog.isDef(opt_options)) {
-    goog.object.extend(this, opt_options);
-  }
-  if (!goog.isDef(this.extractAttributes)) {
-    this.extractAttributes = true;
-  }
-  if (!goog.isDef(this.extractStyles)) {
-    this.extractStyles = false;
-  }
+  var options = /** @type {ol.parser.KMLOptions} */
+      (goog.isDef(opt_options) ? opt_options : {});
+  this.extractAttributes = goog.isDef(options.extractAttributes) ?
+      options.extractAttributes : true;
+  this.extractStyles = goog.isDef(options.extractStyles) ?
+      options.extractStyles : false;
   // TODO re-evaluate once shared structures support 3D
-  if (!goog.isDef(this.dimension)) {
-    this.dimension = 3;
-  }
-  if (!goog.isDef(this.maxDepth)) {
-    this.maxDepth = 0;
-  }
+  this.dimension = goog.isDef(options.dimension) ? options.dimension : 3;
+  this.maxDepth = goog.isDef(options.maxDepth) ? options.maxDepth : 0;
+  this.trackAttributes = goog.isDef(options.trackAttributes) ?
+      options.trackAttributes : null;
+
   this.defaultNamespaceURI = 'http://www.opengis.net/kml/2.2';
   this.readers = {
     'http://www.opengis.net/kml/2.2': {