diff --git a/externs/olx.js b/externs/olx.js
index 41bd1edd78..6ea0e80913 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -5,86 +5,6 @@
 let olx;
 
 
-/**
- * @typedef {{duration: (number|undefined),
- *     className: (string|undefined),
- *     zoomInLabel: (string|Element|undefined),
- *     zoomOutLabel: (string|Element|undefined),
- *     zoomInTipLabel: (string|undefined),
- *     zoomOutTipLabel: (string|undefined),
- *     delta: (number|undefined),
- *     target: (Element|string|undefined)}}
- */
-olx.control.ZoomOptions;
-
-
-/**
- * Animation duration in milliseconds. Default is `250`.
- * @type {number|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.duration;
-
-
-/**
- * CSS class name. Default is `ol-zoom`.
- * @type {string|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.className;
-
-
-/**
- * Text label to use for the zoom-in button. Default is `+`.
- * Instead of text, also an element (e.g. a `span` element) can be used.
- * @type {string|Element|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.zoomInLabel;
-
-
-/**
- * Text label to use for the zoom-out button. Default is `-`.
- * Instead of text, also an element (e.g. a `span` element) can be used.
- * @type {string|Element|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.zoomOutLabel;
-
-
-/**
- * Text label to use for the button tip. Default is `Zoom in`
- * @type {string|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.zoomInTipLabel;
-
-
-/**
- * Text label to use for the button tip. Default is `Zoom out`
- * @type {string|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.zoomOutTipLabel;
-
-
-/**
- * The zoom delta applied on each click.
- * @type {number|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.delta;
-
-
-/**
- * Specify a target if you want the control to be rendered outside of the map's
- * viewport.
- * @type {Element|string|undefined}
- * @api
- */
-olx.control.ZoomOptions.prototype.target;
-
-
 /**
  * @typedef {{className: (string|undefined),
  *     duration: (number|undefined),
diff --git a/externs/xol.js b/externs/xol.js
index ada3af15d8..7f887bf640 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -1,20 +1,4 @@
 
-/**
- * @typedef {Object} control_ZoomOptions
- * @property {number|undefined} duration Animation duration in milliseconds. Default is `250`.
- * @property {string|undefined} className CSS class name. Default is `ol-zoom`.
- * @property {string|Element|undefined} zoomInLabel Text label to use for the zoom-in button. Default is `+`.
- * Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|Element|undefined} zoomOutLabel Text label to use for the zoom-out button. Default is `-`.
- * Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|undefined} zoomInTipLabel Text label to use for the button tip. Default is `Zoom in`
- * @property {string|undefined} zoomOutTipLabel Text label to use for the button tip. Default is `Zoom out`
- * @property {number|undefined} delta The zoom delta applied on each click.
- * @property {Element|string|undefined} target Specify a target if you want the control to be rendered outside of the map's
- * viewport.
- */
-
-
 /**
  * @typedef {Object} control_ZoomSliderOptions
  * @property {string|undefined} className CSS class name.
diff --git a/src/ol/control/Zoom.js b/src/ol/control/Zoom.js
index 1d4c9f4be5..46866ef5ad 100644
--- a/src/ol/control/Zoom.js
+++ b/src/ol/control/Zoom.js
@@ -8,6 +8,25 @@ import Control from '../control/Control.js';
 import {CLASS_CONTROL, CLASS_UNSELECTABLE} from '../css.js';
 import {easeOut} from '../easing.js';
 
+
+/**
+ * @typedef {Object} Options
+ * @property {number|undefined} duration Animation duration in milliseconds. Default is `250`.
+ * @property {string|undefined} className CSS class name. Default is `'ol-zoom'`.
+ * @property {string|Element|undefined} zoomInLabel Text label to use for the zoom-in
+ * button. Default is `'+'`. Instead of text, also an element (e.g. a `span` element) can be used.
+ * @property {string|Element|undefined} zoomOutLabel Text label to use for the zoom-out button.
+ * Default is `'-'`. Instead of text, also an element (e.g. a `span` element) can be used.
+ * @property {string|undefined} zoomInTipLabel Text label to use for the button tip. Default is
+ * `'Zoom in'`.
+ * @property {string|undefined} zoomOutTipLabel Text label to use for the button tip. Default is
+ * `'Zoom out'`.
+ * @property {number|undefined} delta The zoom delta applied on each click.
+ * @property {Element|string|undefined} target Specify a target if you want the control to be
+ * rendered outside of the map's viewport.
+ */
+
+
 /**
  * @classdesc
  * A control with 2 buttons, one for zoom in and one for zoom out.
@@ -16,7 +35,7 @@ import {easeOut} from '../easing.js';
  *
  * @constructor
  * @extends {ol.control.Control}
- * @param {olx.control.ZoomOptions=} opt_options Zoom options.
+ * @param {module:ol/control/Zoom~Options=} opt_options Zoom options.
  * @api
  */
 const Zoom = function(opt_options) {