diff --git a/externs/olx.js b/externs/olx.js
index 215b3d5227..b8952a324d 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -12,67 +12,6 @@ let olx;
 olx.control;
 
 
-/**
- * @typedef {{className: (string|undefined),
- *     coordinateFormat: (module:ol/coordinate~CoordinateFormat|undefined),
- *     projection: ol.ProjectionLike,
- *     render: (function(ol.MapEvent)|undefined),
- *     target: (Element|string|undefined),
- *     undefinedHTML: (string|undefined)}}
- */
-olx.control.MousePositionOptions;
-
-
-/**
- * CSS class name. Default is `ol-mouse-position`.
- * @type {string|undefined}
- * @api
- */
-olx.control.MousePositionOptions.prototype.className;
-
-
-/**
- * Coordinate format.
- * @type {module:ol/coordinate~CoordinateFormat|undefined}
- * @api
- */
-olx.control.MousePositionOptions.prototype.coordinateFormat;
-
-
-/**
- * Projection.
- * @type {ol.ProjectionLike}
- * @api
- */
-olx.control.MousePositionOptions.prototype.projection;
-
-
-/**
- * Function called when the control should be re-rendered. This is called
- * in a requestAnimationFrame callback.
- * @type {function(ol.MapEvent)|undefined}
- * @api
- */
-olx.control.MousePositionOptions.prototype.render;
-
-
-/**
- * Specify a target if you want the control to be rendered outside of the map's
- * viewport.
- * @type {Element|string|undefined}
- * @api
- */
-olx.control.MousePositionOptions.prototype.target;
-
-
-/**
- * Markup for undefined coordinates. Default is `` (empty string).
- * @type {string|undefined}
- * @api
- */
-olx.control.MousePositionOptions.prototype.undefinedHTML;
-
-
 /**
  * @typedef {{collapsed: (boolean|undefined),
  *     collapseLabel: (string|Element|undefined),
diff --git a/externs/xol.js b/externs/xol.js
index 4dcb5a9ae3..2f75f9813b 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -1,17 +1,4 @@
 
-/**
- * @typedef {Object} control_MousePositionOptions
- * @property {string|undefined} className CSS class name. Default is `ol-mouse-position`.
- * @property {module:ol/coordinate~CoordinateFormat|undefined} coordinateFormat Coordinate format.
- * @property {ol.ProjectionLike} projection Projection.
- * @property {function(ol.MapEvent)|undefined} render Function called when the control should be re-rendered. This is called
- * in a requestAnimationFrame callback.
- * @property {Element|string|undefined} target Specify a target if you want the control to be rendered outside of the map's
- * viewport.
- * @property {string|undefined} undefinedHTML Markup for undefined coordinates. Default is `` (empty string).
- */
-
-
 /**
  * @typedef {Object} control_OverviewMapOptions
  * @property {boolean|undefined} collapsed Whether the control should start collapsed or not (expanded).
diff --git a/src/ol/control/MousePosition.js b/src/ol/control/MousePosition.js
index 0909395070..5fc94ade3c 100644
--- a/src/ol/control/MousePosition.js
+++ b/src/ol/control/MousePosition.js
@@ -21,6 +21,23 @@ const PROJECTION = 'projection';
 const COORDINATE_FORMAT = 'coordinateFormat';
 
 
+/**
+ * @typedef {Object} Options
+ * @property {string|undefined} className CSS class name. Default is
+ * `'ol-mouse-position'`.
+ * @property {module:ol/coordinate~CoordinateFormat|undefined} coordinateFormat
+ * Coordinate format.
+ * @property {ol.ProjectionLike} projection Projection.
+ * @property {function(ol.MapEvent)|undefined} render Function called when the
+ * control should be re-rendered. This is called in a `requestAnimationFrame`
+ * callback.
+ * @property {Element|string|undefined} target Specify a target if you want the
+ * control to be rendered outside of the map's viewport.
+ * @property {string|undefined} undefinedHTML Markup for undefined coordinates.
+ * Default is `''` (empty string).
+ */
+
+
 /**
  * @classdesc
  * A control to show the 2D coordinates of the mouse cursor. By default, these
@@ -30,7 +47,7 @@ const COORDINATE_FORMAT = 'coordinateFormat';
  *
  * @constructor
  * @extends {ol.control.Control}
- * @param {olx.control.MousePositionOptions=} opt_options Mouse position
+ * @param {module:ol/control/MousePosition~Options=} opt_options Mouse position
  *     options.
  * @api
  */