diff --git a/src/ol/interaction/modify.js b/src/ol/interaction/modify.js
index 755c16af9c..2dff8c540f 100644
--- a/src/ol/interaction/modify.js
+++ b/src/ol/interaction/modify.js
@@ -700,11 +700,9 @@ ol.interaction.Modify.prototype.handlePointerAtPixel_ = function(pixel, map) {
         ol.coordinate.squaredDistanceToSegment(pixelCoordinate, b.segment);
   };
 
-  var lowerLeft = map.getCoordinateFromPixel(
-      [pixel[0] - this.pixelTolerance_, pixel[1] + this.pixelTolerance_]);
-  var upperRight = map.getCoordinateFromPixel(
-      [pixel[0] + this.pixelTolerance_, pixel[1] - this.pixelTolerance_]);
-  var box = ol.extent.boundingExtent([lowerLeft, upperRight]);
+  var box = ol.extent.buffer(
+      ol.extent.createOrUpdateFromCoordinate(pixelCoordinate),
+      map.getView().getResolution() * this.pixelTolerance_);
 
   var rBush = this.rBush_;
   var nodes = rBush.getInExtent(box);