diff --git a/externs/olx.js b/externs/olx.js
index 779eaf3b55..243d5ad32f 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -3878,7 +3878,7 @@ olx.source.TileDebugOptions.prototype.tileGrid;
  *     maxZoom: (number|undefined),
  *     tileLoadFunction: (ol.TileLoadFunctionType|undefined),
  *     url: (string|undefined)}}
- * @api
+ * @api stable
  */
 olx.source.OSMOptions;
 
diff --git a/src/ol/source/osmsource.js b/src/ol/source/osmsource.js
index da56f6cd19..2d8e80257d 100644
--- a/src/ol/source/osmsource.js
+++ b/src/ol/source/osmsource.js
@@ -13,7 +13,7 @@ goog.require('ol.source.XYZ');
  * @constructor
  * @extends {ol.source.XYZ}
  * @param {olx.source.OSMOptions=} opt_options Open Street Map options.
- * @api
+ * @api stable
  */
 ol.source.OSM = function(opt_options) {