diff --git a/externs/olx.js b/externs/olx.js
index c7888f6061..92865f3db0 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -1418,7 +1418,7 @@ olx.format.KMLOptions;
 /**
  * Extract styles from the KML. Default is `true`.
  * @type {boolean|undefined}
- * @api
+ * @api stable
  */
 olx.format.KMLOptions.prototype.extractStyles;
 
@@ -1426,7 +1426,7 @@ olx.format.KMLOptions.prototype.extractStyles;
 /**
  * Default style. The default default style is the same as Google Earth.
  * @type {Array.<ol.style.Style>|undefined}
- * @api
+ * @api stable
  */
 olx.format.KMLOptions.prototype.defaultStyle;
 
diff --git a/src/ol/format/kmlformat.js b/src/ol/format/kmlformat.js
index 57c7625997..656b946c9c 100644
--- a/src/ol/format/kmlformat.js
+++ b/src/ol/format/kmlformat.js
@@ -64,7 +64,7 @@ ol.format.KMLGxTrackObject_;
  * @constructor
  * @extends {ol.format.XMLFeature}
  * @param {olx.format.KMLOptions=} opt_options Options.
- * @api
+ * @api stable
  */
 ol.format.KML = function(opt_options) {
 
@@ -1509,7 +1509,7 @@ ol.format.KML.prototype.readSharedStyleMap_ = function(node, objectStack) {
  * @param {ArrayBuffer|Document|Node|Object|string} source Source.
  * @param {olx.format.ReadOptions=} opt_options Read options.
  * @return {ol.Feature} Feature.
- * @api
+ * @api stable
  */
 ol.format.KML.prototype.readFeature;
 
@@ -1540,7 +1540,7 @@ ol.format.KML.prototype.readFeatureFromNode = function(node, opt_options) {
  * @param {ArrayBuffer|Document|Node|Object|string} source Source.
  * @param {olx.format.ReadOptions=} opt_options Read options.
  * @return {Array.<ol.Feature>} Features.
- * @api
+ * @api stable
  */
 ol.format.KML.prototype.readFeatures;
 
@@ -1591,7 +1591,7 @@ ol.format.KML.prototype.readFeaturesFromNode = function(node, opt_options) {
 /**
  * @param {Document|Node|string} source Souce.
  * @return {string|undefined} Name.
- * @api
+ * @api stable
  */
 ol.format.KML.prototype.readName = function(source) {
   if (ol.xml.isDocument(source)) {
@@ -1661,7 +1661,7 @@ ol.format.KML.prototype.readNameFromNode = function(node) {
  * @function
  * @param {ArrayBuffer|Document|Node|Object|string} source Source.
  * @return {ol.proj.Projection} Projection.
- * @api
+ * @api stable
  */
 ol.format.KML.prototype.readProjection;
 
@@ -2526,7 +2526,7 @@ ol.format.KML.OUTER_BOUNDARY_NODE_FACTORY_ =
  * @param {Array.<ol.Feature>} features Features.
  * @param {olx.format.WriteOptions=} opt_options Options.
  * @return {Node} Result.
- * @api
+ * @api stable
  */
 ol.format.KML.prototype.writeFeatures;