diff --git a/data/web/inc/functions.mailbox.inc.php b/data/web/inc/functions.mailbox.inc.php
index 1e86b3ee..9deb6ef0 100644
--- a/data/web/inc/functions.mailbox.inc.php
+++ b/data/web/inc/functions.mailbox.inc.php
@@ -1291,10 +1291,10 @@ function mailbox($_action, $_type, $_data = null) {
               $port1 = (!empty($_data['port1'])) ? $_data['port1'] : $is_now['port1'];
               $password1 = (!empty($_data['password1'])) ? $_data['password1'] : $is_now['password1'];
               $host1 = (!empty($_data['host1'])) ? $_data['host1'] : $is_now['host1'];
-              $subfolder2 = (!empty($_data['subfolder2'])) ? $_data['subfolder2'] : $is_now['subfolder2'];
+              $subfolder2 = (!empty($_data['subfolder2'])) ? $_data['subfolder2'] : '';
               $enc1 = (!empty($_data['enc1'])) ? $_data['enc1'] : $is_now['enc1'];
               $mins_interval = (!empty($_data['mins_interval'])) ? $_data['mins_interval'] : $is_now['mins_interval'];
-              $exclude = (!empty($_data['exclude'])) ? $_data['exclude'] : $is_now['exclude'];
+              $exclude = (!empty($_data['exclude'])) ? $_data['exclude'] : '';
               $maxage = (!empty($_data['maxage'])) ? $_data['maxage'] : $is_now['maxage'];
             }
             else {