diff --git a/core/block_drag_surface.js b/core/block_drag_surface.js
index e394ab7d5..5e2e121c7 100644
--- a/core/block_drag_surface.js
+++ b/core/block_drag_surface.js
@@ -232,8 +232,7 @@ Blockly.BlockDragSurfaceSvg.prototype.getCurrentBlock = function() {
  */
 Blockly.BlockDragSurfaceSvg.prototype.getWsTranslation = function() {
   // Returning a copy so the coordinate can not be changed outside this class.
-  return new Blockly.utils.Coordinate(
-      this.childSurfaceXY_.x, this.childSurfaceXY_.y);
+  return this.childSurfaceXY_.clone();
 };
 
 /**