diff --git a/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php b/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php
index ee1bac1b1e..0c775c5a4d 100644
--- a/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php
+++ b/src/applications/settings/panel/PhabricatorEmailPreferencesSettingsPanel.php
@@ -1,212 +1,212 @@
 <?php
 
 final class PhabricatorEmailPreferencesSettingsPanel
   extends PhabricatorSettingsPanel {
 
   public function getPanelKey() {
     return 'emailpreferences';
   }
 
   public function getPanelName() {
     return pht('Email Preferences');
   }
 
   public function getPanelGroupKey() {
     return PhabricatorSettingsEmailPanelGroup::PANELGROUPKEY;
   }
 
   public function isManagementPanel() {
     if ($this->getUser()->getIsMailingList()) {
       return true;
     }
 
     return false;
   }
 
   public function isTemplatePanel() {
     return true;
   }
 
   public function processRequest(AphrontRequest $request) {
     $viewer = $this->getViewer();
     $user = $this->getUser();
 
     $preferences = $this->getPreferences();
 
     $value_email = PhabricatorEmailTagsSetting::VALUE_EMAIL;
 
     $errors = array();
     if ($request->isFormPost()) {
       $new_tags = $request->getArr('mailtags');
       $mailtags = $preferences->getPreference('mailtags', array());
       $all_tags = $this->getAllTags($user);
 
       foreach ($all_tags as $key => $label) {
         $mailtags[$key] = (int)idx($new_tags, $key, $value_email);
       }
 
       $this->writeSetting(
         $preferences,
         PhabricatorEmailTagsSetting::SETTINGKEY,
         $mailtags);
 
       return id(new AphrontRedirectResponse())
         ->setURI($this->getPanelURI('?saved=true'));
     }
 
     $mailtags = $preferences->getSettingValue(
       PhabricatorEmailTagsSetting::SETTINGKEY);
 
     $form = id(new AphrontFormView())
       ->setUser($viewer);
 
     $form->appendRemarkupInstructions(
       pht(
         'You can adjust **Application Settings** here to customize when '.
         'you are emailed and notified.'.
         "\n\n".
         "| Setting | Effect\n".
         "| ------- | -------\n".
         "| Email | You will receive an email and a notification, but the ".
         "notification will be marked \"read\".\n".
         "| Notify | You will receive an unread notification only.\n".
         "| Ignore | You will receive nothing.\n".
         "\n\n".
         'If an update makes several changes (like adding CCs to a task, '.
         'closing it, and adding a comment) you will receive the strongest '.
         'notification any of the changes is configured to deliver.'.
         "\n\n".
         'These preferences **only** apply to objects you are connected to '.
         '(for example, Revisions where you are a reviewer or tasks you are '.
         'CC\'d on). To receive email alerts when other objects are created, '.
         'configure [[ /herald/ | Herald Rules ]].'));
 
     $editors = $this->getAllEditorsWithTags($user);
 
     // Find all the tags shared by more than one application, and put them
     // in a "common" group.
     $all_tags = array();
     foreach ($editors as $editor) {
       foreach ($editor->getMailTagsMap() as $tag => $name) {
         if (empty($all_tags[$tag])) {
           $all_tags[$tag] = array(
             'count' => 0,
             'name' => $name,
           );
         }
         $all_tags[$tag]['count'];
       }
     }
 
     $common_tags = array();
     foreach ($all_tags as $tag => $info) {
       if ($info['count'] > 1) {
         $common_tags[$tag] = $info['name'];
       }
     }
 
     // Build up the groups of application-specific options.
     $tag_groups = array();
     foreach ($editors as $editor) {
       $tag_groups[] = array(
         $editor->getEditorObjectsDescription(),
         array_diff_key($editor->getMailTagsMap(), $common_tags),
       );
     }
 
     // Sort them, then put "Common" at the top.
     $tag_groups = isort($tag_groups, 0);
     if ($common_tags) {
       array_unshift($tag_groups, array(pht('Common'), $common_tags));
     }
 
     // Finally, build the controls.
     foreach ($tag_groups as $spec) {
       list($label, $map) = $spec;
       $control = $this->buildMailTagControl($label, $map, $mailtags);
       $form->appendChild($control);
     }
 
     $form
       ->appendChild(
         id(new AphrontFormSubmitControl())
           ->setValue(pht('Save Preferences')));
 
     $form_box = id(new PHUIObjectBoxView())
       ->setHeaderText(pht('Email Preferences'))
       ->setFormSaved($request->getStr('saved'))
       ->setFormErrors($errors)
       ->setForm($form);
 
     return $form_box;
   }
 
   private function getAllEditorsWithTags(PhabricatorUser $user = null) {
     $editors = id(new PhutilClassMapQuery())
       ->setAncestorClass('PhabricatorApplicationTransactionEditor')
       ->setFilterMethod('getMailTagsMap')
       ->execute();
 
     foreach ($editors as $key => $editor) {
       // Remove editors for applications which are not installed.
       $app = $editor->getEditorApplicationClass();
       if ($app !== null && $user !== null) {
         if (!PhabricatorApplication::isClassInstalledForViewer($app, $user)) {
           unset($editors[$key]);
         }
       }
     }
 
     return $editors;
   }
 
-  private function getAllTags(PhabricatorUser $user) {
+  private function getAllTags(PhabricatorUser $user = null) {
     $tags = array();
     foreach ($this->getAllEditorsWithTags($user) as $editor) {
       $tags += $editor->getMailTagsMap();
     }
     return $tags;
   }
 
   private function buildMailTagControl(
     $control_label,
     array $tags,
     array $prefs) {
 
     $value_email = PhabricatorEmailTagsSetting::VALUE_EMAIL;
     $value_notify = PhabricatorEmailTagsSetting::VALUE_NOTIFY;
     $value_ignore = PhabricatorEmailTagsSetting::VALUE_IGNORE;
 
     $content = array();
     foreach ($tags as $key => $label) {
       $select = AphrontFormSelectControl::renderSelectTag(
         (int)idx($prefs, $key, $value_email),
         array(
           $value_email => pht("\xE2\x9A\xAB Email"),
           $value_notify => pht("\xE2\x97\x90 Notify"),
           $value_ignore => pht("\xE2\x9A\xAA Ignore"),
         ),
         array(
           'name' => 'mailtags['.$key.']',
         ));
 
       $content[] = phutil_tag(
         'div',
         array(
           'class' => 'psb',
         ),
         array(
           $select,
           ' ',
           $label,
         ));
     }
 
     $control = new AphrontFormStaticControl();
     $control->setLabel($control_label);
     $control->setValue($content);
 
     return $control;
   }
 
 }