diff --git a/web/pgadmin/static/bundle/slickgrid.js b/web/pgadmin/static/bundle/slickgrid.js
index 60b0ee92..befb67e2 100644
--- a/web/pgadmin/static/bundle/slickgrid.js
+++ b/web/pgadmin/static/bundle/slickgrid.js
@@ -1,4 +1,5 @@
 import 'slickgrid/lib/jquery.event.drag-2.3.0';
+import 'slickgrid/lib/jquery-ui-1.11.3';
 import 'slickgrid/slick.core';
 import 'slickgrid/slick.grid';
 import 'slickgrid/slick.dataview';
diff --git a/web/pgadmin/static/js/backgrid.pgadmin.js b/web/pgadmin/static/js/backgrid.pgadmin.js
index 48ee98cd..87ef146c 100644
--- a/web/pgadmin/static/js/backgrid.pgadmin.js
+++ b/web/pgadmin/static/js/backgrid.pgadmin.js
@@ -119,6 +119,7 @@
         // extract the values from the models
 
         var l = func(left, attr), r = func(right, attr), t;
+        if (_.isUndefined(l) || _.isUndefined(r)) return;
 
         var types = ['number-cell', 'integer-cell'];
         if (_.include(types, type)) {