diff --git a/src/ol/interaction/dragpaninteraction.js b/src/ol/interaction/dragpaninteraction.js
index 6cca9a096d..ea82d07b1b 100644
--- a/src/ol/interaction/dragpaninteraction.js
+++ b/src/ol/interaction/dragpaninteraction.js
@@ -51,7 +51,9 @@ goog.inherits(ol.interaction.DragPan, ol.interaction.Drag);
  */
 ol.interaction.DragPan.prototype.handleDrag = function(mapBrowserEvent) {
   if (this.kinetic_) {
-    this.kinetic_.update(mapBrowserEvent.browserEvent);
+    this.kinetic_.update(
+        mapBrowserEvent.browserEvent.clientX,
+        mapBrowserEvent.browserEvent.clientY);
   }
   var map = mapBrowserEvent.map;
   // FIXME works for View2D only
@@ -104,7 +106,7 @@ ol.interaction.DragPan.prototype.handleDragStart = function(mapBrowserEvent) {
   var browserEvent = mapBrowserEvent.browserEvent;
   if (this.condition_(browserEvent)) {
     if (this.kinetic_) {
-      this.kinetic_.begin(browserEvent);
+      this.kinetic_.begin(browserEvent.clientX, browserEvent.clientY);
     }
     var map = mapBrowserEvent.map;
     map.requestRenderFrame();
diff --git a/src/ol/kinetic.js b/src/ol/kinetic.js
index 5be0754ead..47a99ea7ee 100644
--- a/src/ol/kinetic.js
+++ b/src/ol/kinetic.js
@@ -63,23 +63,25 @@ ol.Kinetic = function(decay, minVelocity, delay) {
 
 
 /**
- * @param {goog.events.BrowserEvent} browserEvent Browser event.
+ * @param {number} x X.
+ * @param {number} y Y.
  */
-ol.Kinetic.prototype.begin = function(browserEvent) {
+ol.Kinetic.prototype.begin = function(x, y) {
   this.points_.length = 0;
   this.angle_ = 0;
   this.initialVelocity_ = 0;
-  this.update(browserEvent);
+  this.update(x, y);
 };
 
 
 /**
- * @param {goog.events.BrowserEvent} browserEvent Browser event.
+ * @param {number} x X.
+ * @param {number} y Y.
  */
-ol.Kinetic.prototype.update = function(browserEvent) {
+ol.Kinetic.prototype.update = function(x, y) {
   this.points_.push({
-    x: browserEvent.clientX,
-    y: browserEvent.clientY,
+    x: x,
+    y: y,
     t: goog.now()
   });
 };