edit mailinglists

app/UI/Client/DistributionList/Providers/EditListDataProvider.php

@@ -252,7 +252,7 @@ class EditListDataProvider extends AddListDataProvider
         }
         // change moderator
         if($this->formData['moderator'] != $this->formData['oldModerator']) {
-            if($this->formData['oldModerator'] != 'none') {
+            if(!empty($this->formData['oldModerator'])) {
                 $paramsDel[] = array(
                     'emailAddress' => $this->formData['oldModerator'],
                     'kind' => 'Moderator'