diff --git a/CTK/Tab.py b/CTK/Tab.py
index ca5221c1c..387d62aea 100644
--- a/CTK/Tab.py
+++ b/CTK/Tab.py
@@ -80,7 +80,7 @@
    }).bind('tabsselect', function(event, ui) {
       /* Selection fixes for the tab theme */
       var tabslen  = this_tab.tabs('length');
-      var nprevtab = parseInt(ui.index);
+      var nprevtab = parseInt(get_cookie('opentab')) + 2;
       var nnexttab = parseInt(ui.index) +2;
 
       if (nprevtab < tabslen) {