diff --git a/js/ui.js b/js/ui.js
index 2aa782ed51..b4256ca378 100644
--- a/js/ui.js
+++ b/js/ui.js
@@ -390,6 +390,8 @@ RangeSelector.prototype = {
       origY = e.pageY;
       if (this.setCapture)
         this.setCapture();
+      // Reset the highlight rectangle
+      updateHiliteRectangle(e.pageX, e.pageY);
       e.preventDefault();
     }, false);
     graph.addEventListener("mouseup", function(e) {