diff --git a/src/applications/people/query/PhabricatorPeopleQuery.php b/src/applications/people/query/PhabricatorPeopleQuery.php
index cd323d8f66..f1ec4376e8 100644
--- a/src/applications/people/query/PhabricatorPeopleQuery.php
+++ b/src/applications/people/query/PhabricatorPeopleQuery.php
@@ -1,303 +1,303 @@
 <?php
 
 final class PhabricatorPeopleQuery
   extends PhabricatorCursorPagedPolicyAwareQuery {
 
   private $usernames;
   private $realnames;
   private $emails;
   private $phids;
   private $ids;
   private $dateCreatedAfter;
   private $dateCreatedBefore;
   private $isAdmin;
   private $isSystemAgent;
   private $isDisabled;
   private $isApproved;
   private $nameLike;
 
   private $needPrimaryEmail;
   private $needProfile;
   private $needProfileImage;
   private $needStatus;
 
   public function withIDs(array $ids) {
     $this->ids = $ids;
     return $this;
   }
 
   public function withPHIDs(array $phids) {
     $this->phids = $phids;
     return $this;
   }
 
   public function withEmails(array $emails) {
     $this->emails = $emails;
     return $this;
   }
 
   public function withRealnames(array $realnames) {
     $this->realnames = $realnames;
     return $this;
   }
 
   public function withUsernames(array $usernames) {
     $this->usernames = $usernames;
     return $this;
   }
 
   public function withDateCreatedBefore($date_created_before) {
     $this->dateCreatedBefore = $date_created_before;
     return $this;
   }
 
   public function withDateCreatedAfter($date_created_after) {
     $this->dateCreatedAfter = $date_created_after;
     return $this;
   }
 
   public function withIsAdmin($admin) {
     $this->isAdmin = $admin;
     return $this;
   }
 
   public function withIsSystemAgent($system_agent) {
     $this->isSystemAgent = $system_agent;
     return $this;
   }
 
   public function withIsDisabled($disabled) {
     $this->isDisabled = $disabled;
     return $this;
   }
 
   public function withIsApproved($approved) {
     $this->isApproved = $approved;
     return $this;
   }
 
   public function withNameLike($like) {
     $this->nameLike = $like;
     return $this;
   }
 
   public function needPrimaryEmail($need) {
     $this->needPrimaryEmail = $need;
     return $this;
   }
 
   public function needProfile($need) {
     $this->needProfile = $need;
     return $this;
   }
 
   public function needProfileImage($need) {
     $this->needProfileImage = $need;
     return $this;
   }
 
   public function needStatus($need) {
     $this->needStatus = $need;
     return $this;
   }
 
   public function loadPage() {
     $table  = new PhabricatorUser();
     $conn_r = $table->establishConnection('r');
 
     $data = queryfx_all(
       $conn_r,
       'SELECT * FROM %T user %Q %Q %Q %Q %Q',
       $table->getTableName(),
       $this->buildJoinsClause($conn_r),
       $this->buildWhereClause($conn_r),
       $this->buildApplicationSearchGroupClause($conn_r),
       $this->buildOrderClause($conn_r),
       $this->buildLimitClause($conn_r));
 
     if ($this->needPrimaryEmail) {
       $table->putInSet(new LiskDAOSet());
     }
 
     return $table->loadAllFromArray($data);
   }
 
   protected function didFilterPage(array $users) {
     if ($this->needProfile) {
       $user_list = mpull($users, null, 'getPHID');
       $profiles = new PhabricatorUserProfile();
       $profiles = $profiles->loadAllWhere('userPHID IN (%Ls)',
         array_keys($user_list));
 
       $profiles = mpull($profiles, null, 'getUserPHID');
       foreach ($user_list as $user_phid => $user) {
         $profile = idx($profiles, $user_phid);
         if (!$profile) {
           $profile = new PhabricatorUserProfile();
           $profile->setUserPHID($user_phid);
         }
 
         $user->attachUserProfile($profile);
       }
     }
 
     if ($this->needProfileImage) {
       $user_profile_file_phids = mpull($users, 'getProfileImagePHID');
       $user_profile_file_phids = array_filter($user_profile_file_phids);
       if ($user_profile_file_phids) {
         $files = id(new PhabricatorFileQuery())
           ->setParentQuery($this)
           ->setViewer($this->getViewer())
           ->withPHIDs($user_profile_file_phids)
           ->execute();
         $files = mpull($files, null, 'getPHID');
       } else {
         $files = array();
       }
       foreach ($users as $user) {
         $image_phid = $user->getProfileImagePHID();
         if (isset($files[$image_phid])) {
           $profile_image_uri = $files[$image_phid]->getBestURI();
         } else {
           $profile_image_uri = PhabricatorUser::getDefaultProfileImageURI();
         }
         $user->attachProfileImageURI($profile_image_uri);
       }
     }
 
     if ($this->needStatus) {
       $user_list = mpull($users, null, 'getPHID');
       $statuses = id(new PhabricatorCalendarEvent())->loadCurrentStatuses(
         array_keys($user_list));
       foreach ($user_list as $phid => $user) {
         $status = idx($statuses, $phid);
         if ($status) {
           $user->attachStatus($status);
         }
       }
     }
 
     return $users;
   }
 
   private function buildJoinsClause($conn_r) {
     $joins = array();
 
     if ($this->emails) {
       $email_table = new PhabricatorUserEmail();
       $joins[] = qsprintf(
         $conn_r,
         'JOIN %T email ON email.userPHID = user.PHID',
         $email_table->getTableName());
     }
 
     $joins[] = $this->buildApplicationSearchJoinClause($conn_r);
 
     $joins = implode(' ', $joins);
     return  $joins;
   }
 
   private function buildWhereClause($conn_r) {
     $where = array();
 
-    if ($this->usernames) {
+    if ($this->usernames !== null) {
       $where[] = qsprintf(
         $conn_r,
         'user.userName IN (%Ls)',
         $this->usernames);
     }
 
-    if ($this->emails) {
+    if ($this->emails !== null) {
       $where[] = qsprintf(
         $conn_r,
         'email.address IN (%Ls)',
         $this->emails);
     }
 
-    if ($this->realnames) {
+    if ($this->realnames !== null) {
       $where[] = qsprintf(
         $conn_r,
         'user.realName IN (%Ls)',
         $this->realnames);
     }
 
-    if ($this->phids) {
+    if ($this->phids !== null) {
       $where[] = qsprintf(
         $conn_r,
         'user.phid IN (%Ls)',
         $this->phids);
     }
 
-    if ($this->ids) {
+    if ($this->ids !== null) {
       $where[] = qsprintf(
         $conn_r,
         'user.id IN (%Ld)',
         $this->ids);
     }
 
     if ($this->dateCreatedAfter) {
       $where[] = qsprintf(
         $conn_r,
         'user.dateCreated >= %d',
         $this->dateCreatedAfter);
     }
 
     if ($this->dateCreatedBefore) {
       $where[] = qsprintf(
         $conn_r,
         'user.dateCreated <= %d',
         $this->dateCreatedBefore);
     }
 
     if ($this->isAdmin) {
       $where[] = qsprintf(
         $conn_r,
         'user.isAdmin = 1');
     }
 
     if ($this->isDisabled !== null) {
       $where[] = qsprintf(
         $conn_r,
         'user.isDisabled = %d',
         (int)$this->isDisabled);
     }
 
     if ($this->isApproved !== null) {
       $where[] = qsprintf(
         $conn_r,
         'user.isApproved = %d',
         (int)$this->isApproved);
     }
 
     if ($this->isSystemAgent) {
       $where[] = qsprintf(
         $conn_r,
         'user.isSystemAgent = 1');
     }
 
     if (strlen($this->nameLike)) {
       $where[] = qsprintf(
         $conn_r,
         'user.username LIKE %~ OR user.realname LIKE %~',
         $this->nameLike,
         $this->nameLike);
     }
 
     $where[] = $this->buildPagingClause($conn_r);
 
     return $this->formatWhereClause($where);
   }
 
   protected function getPagingColumn() {
     return 'user.id';
   }
 
   protected function getApplicationSearchObjectPHIDColumn() {
     return 'user.phid';
   }
 
   public function getQueryApplicationClass() {
     return 'PhabricatorApplicationPeople';
   }
 
 }