diff --git a/types/openlayers/index.d.ts b/types/openlayers/index.d.ts
index bd3a90a3c9..351146d884 100644
--- a/types/openlayers/index.d.ts
+++ b/types/openlayers/index.d.ts
@@ -12436,11 +12436,13 @@ declare module olx {
         /**
          * @typedef {{className: (string|undefined),
          *     condition: (ol.EventsConditionType|undefined),
+         *     minArea: (number|undefined),
          *     boxEndCondition: (ol.DragBoxEndConditionType|undefined)}}
          */
         interface DragBoxOptions {
             className?: string;
             condition?: ol.EventsConditionType;
+            minArea?: number;
             boxEndCondition?: ol.DragBoxEndConditionType;
         }
 
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];