diff --git a/externs/olx.js b/externs/olx.js
index ca39637278..8501328d66 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -5,56 +5,6 @@
 let olx;
 
 
-/**
- * @typedef {{featureClass: (function((ol.geom.Geometry|Object.<string, *>)=)|
- *         function(ol.geom.GeometryType,Array.<number>,
- *             (Array.<number>|Array.<Array.<number>>),Object.<string, *>)|
- *         undefined),
- *     geometryName: (string|undefined),
- *     layers: (Array.<string>|undefined),
- *     layerName: (string|undefined)}}
- */
-olx.format.MVTOptions;
-
-
-/**
- * Class for features returned by {@link ol.format.MVT#readFeatures}. Set to
- * {@link ol.Feature} to get full editing and geometry support at the cost of
- * decreased rendering performance. The default is {@link ol.render.Feature},
- * which is optimized for rendering and hit detection.
- * @type {undefined|function((ol.geom.Geometry|Object.<string,*>)=)|
- *     function(ol.geom.GeometryType,Array.<number>,
- *         (Array.<number>|Array.<Array.<number>>),Object.<string,*>,number)}
- * @api
- */
-olx.format.MVTOptions.prototype.featureClass;
-
-
-/**
- * Geometry name to use when creating features. Default is 'geometry'.
- * @type {string|undefined}
- * @api
- */
-olx.format.MVTOptions.prototype.geometryName;
-
-
-/**
- * Name of the feature attribute that holds the layer name. Default is 'layer'.
- * @type {string|undefined}
- * @api
- */
-olx.format.MVTOptions.prototype.layerName;
-
-
-/**
- * Layers to read features from. If not provided, features will be read from all
- * layers.
- * @type {Array.<string>|undefined}
- * @api
- */
-olx.format.MVTOptions.prototype.layers;
-
-
 /**
  * @typedef {{factor: (number|undefined),
  *     geometryLayout: (ol.geom.GeometryLayout|undefined)}}
diff --git a/externs/xol.js b/externs/xol.js
index d1441918fc..b2a97786bf 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -1,19 +1,4 @@
 
-/**
- * @typedef {Object} format_MVTOptions
- * @property {undefined|function((ol.geom.Geometry|Object.<string,*>)=)|    function(ol.geom.GeometryType,Array.<number>,
-        (Array.<number>|Array.<Array.<number>>),Object.<string,*>,number)}
- featureClass Class for features returned by {@link ol.format.MVT#readFeatures}. Set to
- * {@link ol.Feature} to get full editing and geometry support at the cost of
- * decreased rendering performance. The default is {@link ol.render.Feature},
- * which is optimized for rendering and hit detection.
- * @property {string|undefined} geometryName Geometry name to use when creating features. Default is 'geometry'.
- * @property {string|undefined} layerName Name of the feature attribute that holds the layer name. Default is 'layer'.
- * @property {Array.<string>|undefined} layers Layers to read features from. If not provided, features will be read from all
- * layers.
- */
-
-
 /**
  * @typedef {Object} format_PolylineOptions
  * @property {number|undefined} factor The factor by which the coordinates values will be scaled.
diff --git a/src/ol/format/MVT.js b/src/ol/format/MVT.js
index 3e42fc0738..db8ed9854c 100644
--- a/src/ol/format/MVT.js
+++ b/src/ol/format/MVT.js
@@ -21,13 +21,30 @@ import Projection from '../proj/Projection.js';
 import Units from '../proj/Units.js';
 import RenderFeature from '../render/Feature.js';
 
+
+/**
+ * @typedef {Object} Options
+ * @property {undefined|function((ol.geom.Geometry|Object.<string,*>)=)|function(ol.geom.GeometryType,Array.<number>,(Array.<number>|Array.<Array.<number>>),Object.<string,*>,number)} featureClass
+ * Class for features returned by {@link ol.format.MVT#readFeatures}. Set to
+ * {@link ol.Feature} to get full editing and geometry support at the cost of
+ * decreased rendering performance. The default is {@link ol.render.Feature},
+ * which is optimized for rendering and hit detection.
+ * @property {string|undefined} geometryName Geometry name to use when creating
+ * features. Default is `'geometry'`.
+ * @property {string|undefined} layerName Name of the feature attribute that
+ * holds the layer name. Default is `'layer'`.
+ * @property {Array.<string>|undefined} layers Layers to read features from. If not
+ * provided, features will be read from all layers.
+ */
+
+
 /**
  * @classdesc
  * Feature format for reading data in the Mapbox MVT format.
  *
  * @constructor
  * @extends {ol.format.Feature}
- * @param {olx.format.MVTOptions=} opt_options Options.
+ * @param {module:ol/format/MVT~Options=} opt_options Options.
  * @api
  */
 const MVT = function(opt_options) {