diff --git a/externs/olx.js b/externs/olx.js
index 57e5d11ac5..c0567017b0 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -5048,7 +5048,7 @@ olx.source.WMTSOptions.prototype.projection;
 
 
 /**
- * Request encoding.
+ * Request encoding. Default is `KVP`.
  * @type {ol.source.WMTSRequestEncoding|undefined}
  * @api
  */