diff --git a/types/openlayers/openlayers-tests.ts b/types/openlayers/openlayers-tests.ts
index 78cd6fb556..3ebea5f095 100644
--- a/types/openlayers/openlayers-tests.ts
+++ b/types/openlayers/openlayers-tests.ts
@@ -695,6 +695,7 @@ draw = new ol.interaction.Draw({
 
 let dragbox: ol.interaction.DragBox = new ol.interaction.DragBox({
     className: stringValue,
+    minArea: 10,
     condition: ol.events.condition.always,
     boxEndCondition: function (mapBrowserEvent: ol.MapBrowserEvent, startPixel: ol.Pixel, endPixel: ol.Pixel) {
         let width: number = endPixel[0] - startPixel[0];