diff --git a/externs/olx.js b/externs/olx.js
index ca44065d92..b18745825c 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -5,23 +5,6 @@
 let olx;
 
 
-/**
- * @typedef {{
- *     layers: (Array.<string>|undefined)
- * }}
- */
-olx.format.WMSGetFeatureInfoOptions;
-
-
-/**
- * If set, only features of the given layers will be returned by the format
- * when read.
- * @type {Array.<string>|undefined}
- * @api
- */
-olx.format.WMSGetFeatureInfoOptions.prototype.layers;
-
-
 /**
  * @typedef {{duration: (number|undefined),
  *     delta: (number|undefined)}}
diff --git a/externs/xol.js b/externs/xol.js
index 6a9d340840..b3e1c6091c 100644
--- a/externs/xol.js
+++ b/externs/xol.js
@@ -1,11 +1,4 @@
 
-/**
- * @typedef {Object} format_WMSGetFeatureInfoOptions
- * @property {Array.<string>|undefined} layers If set, only features of the given layers will be returned by the format
- * when read.
- */
-
-
 /**
  * @typedef {Object} interaction_DoubleClickZoomOptions
  * @property {number|undefined} duration Animation duration in milliseconds. Default is `250`.
diff --git a/src/ol/format/WMSGetFeatureInfo.js b/src/ol/format/WMSGetFeatureInfo.js
index f4d73bb584..cc7e393cc1 100644
--- a/src/ol/format/WMSGetFeatureInfo.js
+++ b/src/ol/format/WMSGetFeatureInfo.js
@@ -8,6 +8,14 @@ import XMLFeature from '../format/XMLFeature.js';
 import {assign} from '../obj.js';
 import {makeArrayPusher, makeStructureNS, pushParseAndPop} from '../xml.js';
 
+
+/**
+ * @typedef {Object} Options
+ * @property {Array.<string>|undefined} layers If set, only features of the
+ * given layers will be returned by the format when read.
+ */
+
+
 /**
  * @classdesc
  * Format for reading WMSGetFeatureInfo format. It uses
@@ -15,7 +23,7 @@ import {makeArrayPusher, makeStructureNS, pushParseAndPop} from '../xml.js';
  *
  * @constructor
  * @extends {ol.format.XMLFeature}
- * @param {olx.format.WMSGetFeatureInfoOptions=} opt_options Options.
+ * @param {module:ol/format/WMSGetFeatureInfo~Options=} opt_options Options.
  * @api
  */
 const WMSGetFeatureInfo = function(opt_options) {