diff --git a/browser/components/places/content/controller.js b/browser/components/places/content/controller.js
index 54eccccab167..f8444f7f9af9 100755
--- a/browser/components/places/content/controller.js
+++ b/browser/components/places/content/controller.js
@@ -990,8 +990,9 @@ PlacesController.prototype = {
     if (URIs.length > REMOVE_PAGES_MAX_SINGLEREMOVES) {
       // do removal in chunks to avoid passing a too big array to removePages
       for (var i = 0; i < URIs.length; i += REMOVE_PAGES_CHUNKLEN) {
-        var URIslice = URIs.slice(i, Math.max(i + REMOVE_PAGES_CHUNKLEN, URIs.length));
-        // set DoBatchNotify only on the last chunk
+        var URIslice = URIs.slice(i, i + REMOVE_PAGES_CHUNKLEN);
+        // set DoBatchNotify (third param) only on the last chunk, so we update
+        // the treeView when we are done.
         bhist.removePages(URIslice, URIslice.length,
                           (i + REMOVE_PAGES_CHUNKLEN) >= URIs.length);
       }