diff --git a/src/layui/layui/layNetlistBrowserPage.cc b/src/layui/layui/layNetlistBrowserPage.cc
index ee30ee713..19edf30ed 100644
--- a/src/layui/layui/layNetlistBrowserPage.cc
+++ b/src/layui/layui/layNetlistBrowserPage.cc
@@ -246,7 +246,7 @@ NetlistBrowserPage::~NetlistBrowserPage ()
 bool
 NetlistBrowserPage::is_netlist_mode ()
 {
-  return mode_tab->currentIndex () == 0; // @@@
+  return mode_tab->currentIndex () == 0;
 }
 
 void
@@ -1038,12 +1038,16 @@ NetlistBrowserPage::set_db (db::LayoutToNetlist *l2ndb)
     rerun_button->setToolTip (QString ());
   }
 
-  //  @@@ how to hide?
   bool is_lvsdb = (lvsdb != 0);
   mode_tab->setTabEnabled (0, true);
   mode_tab->setTabEnabled (1, is_lvsdb);
   mode_tab->setTabEnabled (2, is_lvsdb);
   mode_tab->setTabEnabled (3, is_lvsdb);
+#if QT_VERSION >= 0x50F00
+  mode_tab->setTabVisible (1, is_lvsdb);
+  mode_tab->setTabVisible (2, is_lvsdb);
+  mode_tab->setTabVisible (3, is_lvsdb);
+#endif
 
   if (is_lvsdb) {
     mode_tab->setCurrentIndex (2);