diff --git a/src/ol/interaction/draginteraction.js b/src/ol/interaction/draginteraction.js
index 9d81f7a2bb..6d421fed93 100644
--- a/src/ol/interaction/draginteraction.js
+++ b/src/ol/interaction/draginteraction.js
@@ -39,12 +39,12 @@ ol.interaction.Drag = function() {
   /**
    * @type {number}
    */
-  this.offsetX = 0;
+  this.deltaX = 0;
 
   /**
    * @type {number}
    */
-  this.offsetY = 0;
+  this.deltaY = 0;
 
   /**
    * @type {ol.Coordinate}