diff --git a/externs/olx.js b/externs/olx.js
index 82c3fde073..c3fec4bade 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -2585,6 +2585,7 @@ olx.interaction.DragZoomOptions.prototype.out;
  *     type: ol.geom.GeometryType,
  *     maxPoints: (number|undefined),
  *     minPoints: (number|undefined),
+ *     finishCondition: (ol.events.ConditionType|undefined),
  *     style: (ol.style.Style|Array.<ol.style.Style>|ol.style.StyleFunction|undefined),
  *     geometryFunction: (ol.interaction.DrawGeometryFunctionType|undefined),
  *     geometryName: (string|undefined),