diff --git a/panel/index.php b/panel/index.php
index 9174495..13b092f 100644
--- a/panel/index.php
+++ b/panel/index.php
@@ -23,7 +23,9 @@ $f3->set('NAV.hostname', trim(`/bin/hostname -f`));
 /* configurations based on hostname */
 if ($f3->get('HOST') == $f3->get('NAV.hostname')) {
   $mapping = 'vpanel';
-  $f3->clear('SESSION.domain');
+  if ($f3->exists('SESSION.domain')) {
+    $f3->clear('SESSION.domain');
+  }
 } elseif (preg_match('/^mail\./i', $f3->get('HOST'))) {
   $mapping = 'vmail';
   $domain = preg_replace('/^mail\./i', '', $f3->get('HOST'));