diff --git a/modules/Settings/MailConverter/models/Field.php b/modules/Settings/MailConverter/models/Field.php
index 7154dddf72a12afe70ba9ae9ae204ed92f25ea0b..65ad41de1b0e20150bd1419a52e4d271f35eaa3f 100644
--- a/modules/Settings/MailConverter/models/Field.php
+++ b/modules/Settings/MailConverter/models/Field.php
@@ -57,7 +57,7 @@ class Settings_MailConverter_Field_Model extends Vtiger_Field_Model {
                 $pickListValues[$option] = vtranslate($option, 'Settings::MailConverter');
             }
         }else if ($fieldName == 'markas') {
-            $optionList = array('', 'UNSEEN','SEEN');
+            $optionList = array('UNCHANGED', 'UNSEEN','SEEN');
             foreach($optionList as $option) {
 				$pickListValues[$option] = vtranslate($option, 'Settings::MailConverter');
             }