diff --git a/src/ol/MapBrowserEventHandler.js b/src/ol/MapBrowserEventHandler.js
index c8dcdcd2bb..4ae4b50642 100644
--- a/src/ol/MapBrowserEventHandler.js
+++ b/src/ol/MapBrowserEventHandler.js
@@ -12,10 +12,10 @@ import {listen, unlistenByKey} from './events.js';
 
 /**
  * @typedef {Object} PointerEventData
- * @property {string} type
- * @property {number} clientX
- * @property {number} clientY
- * @property {EventTarget} target
+ * @property {string} type The type of the pointer event.
+ * @property {number} clientX ClientX.
+ * @property {number} clientY ClientY.
+ * @property {EventTarget} target The target of the event.
  */
 
 class MapBrowserEventHandler extends Target {
diff --git a/src/ol/tilegrid/TileGrid.js b/src/ol/tilegrid/TileGrid.js
index d5be04961e..21123b5903 100644
--- a/src/ol/tilegrid/TileGrid.js
+++ b/src/ol/tilegrid/TileGrid.js
@@ -362,7 +362,7 @@ class TileGrid {
   /**
    * @param {import("../tilecoord.js").TileCoord} tileCoord Tile coordinate.
    * @param {number} z Integer zoom level.
-   * @param {import("../TileRange.js").default=} opt_tileRange Temporary import("../TileRange.js").default object.
+   * @param {import("../TileRange.js").default} [opt_tileRange] Temporary import("../TileRange.js").default object.
    * @return {import("../TileRange.js").default} Tile range.
    */
   getTileRangeForTileCoordAndZ(tileCoord, z, opt_tileRange) {