diff --git a/examples/drag-and-drop-image-vector.js b/examples/drag-and-drop-image-vector.js
index 9a6886af52..390771c1be 100644
--- a/examples/drag-and-drop-image-vector.js
+++ b/examples/drag-and-drop-image-vector.js
@@ -115,8 +115,8 @@ var map = new ol.Map({
 
 dragAndDropInteraction.on('addfeatures', function(event) {
   var vectorSource = new ol.source.Vector({
-    features: event.getFeatures(),
-    projection: event.getProjection()
+    features: event.features,
+    projection: event.projection
   });
   map.getLayers().push(new ol.layer.Image({
     source: new ol.source.ImageVector({
diff --git a/examples/drag-and-drop.js b/examples/drag-and-drop.js
index 2c05bcee5d..b870d4efd7 100644
--- a/examples/drag-and-drop.js
+++ b/examples/drag-and-drop.js
@@ -114,8 +114,8 @@ var map = new ol.Map({
 
 dragAndDropInteraction.on('addfeatures', function(event) {
   var vectorSource = new ol.source.Vector({
-    features: event.getFeatures(),
-    projection: event.getProjection()
+    features: event.features,
+    projection: event.projection
   });
   map.getLayers().push(new ol.layer.Vector({
     source: vectorSource,
diff --git a/externs/oli.js b/externs/oli.js
index 6d8c5eeeb4..1e1b3ac78d 100644
--- a/externs/oli.js
+++ b/externs/oli.js
@@ -29,3 +29,16 @@ oli.control.Control = function() {};
  * @return {undefined} Undefined.
  */
 oli.control.Control.prototype.setMap = function(map) {};
+
+
+
+/** @interface */
+oli.interaction.DragAndDropEvent = function() {};
+
+
+/** @type {Array.<ol.Feature>} */
+oli.interaction.DragAndDropEvent.prototype.features;
+
+
+/** @type {ol.proj.Projection} */
+oli.interaction.DragAndDropEvent.prototype.projection;
diff --git a/src/ol/interaction/draganddropinteraction.exports b/src/ol/interaction/draganddropinteraction.exports
index 0e8bc5ea27..50e9fef9e3 100644
--- a/src/ol/interaction/draganddropinteraction.exports
+++ b/src/ol/interaction/draganddropinteraction.exports
@@ -1,4 +1 @@
 @exportSymbol ol.interaction.DragAndDrop
-
-@exportProperty ol.interaction.DragAndDropEvent.prototype.getFeatures
-@exportProperty ol.interaction.DragAndDropEvent.prototype.getProjection
diff --git a/src/ol/interaction/draganddropinteraction.js b/src/ol/interaction/draganddropinteraction.js
index c9cf155fee..77645850c8 100644
--- a/src/ol/interaction/draganddropinteraction.js
+++ b/src/ol/interaction/draganddropinteraction.js
@@ -183,6 +183,7 @@ ol.interaction.DragAndDropEventType = {
 /**
  * @constructor
  * @extends {goog.events.Event}
+ * @implements {oli.interaction.DragAndDropEvent}
  * @param {ol.interaction.DragAndDropEventType} type Type.
  * @param {Object=} opt_target Target.
  * @param {Array.<ol.Feature>=} opt_features Features.
@@ -194,32 +195,14 @@ ol.interaction.DragAndDropEvent =
   goog.base(this, type, opt_target);
 
   /**
-   * @private
    * @type {Array.<ol.Feature>|undefined}
    */
-  this.features_ = opt_features;
+  this.features = opt_features;
 
   /**
-   * @private
    * @type {ol.proj.Projection|undefined}
    */
-  this.projection_ = opt_projection;
+  this.projection = opt_projection;
 
 };
 goog.inherits(ol.interaction.DragAndDropEvent, goog.events.Event);
-
-
-/**
- * @return {Array.<ol.Feature>|undefined} Features.
- */
-ol.interaction.DragAndDropEvent.prototype.getFeatures = function() {
-  return this.features_;
-};
-
-
-/**
- * @return {ol.proj.Projection|undefined} Projection.
- */
-ol.interaction.DragAndDropEvent.prototype.getProjection = function() {
-  return this.projection_;
-};