diff --git a/externs/olx.js b/externs/olx.js
index d40ca730f3..5ff47a3a2b 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -325,7 +325,7 @@ olx.AtPixelOptions.prototype.layerFilter;
 /**
  * Hit-detection tolerance in pixels. Pixels inside the radius around the given position
  * will be checked for features. This only works for the canvas renderer and
- * not for WebGL.
+ * not for WebGL. Default is `0`.
  * @type {number|undefined}
  * @api
  */