diff --git a/src/applications/aphlict/management/PhabricatorAphlictManagementNotifyWorkflow.php b/src/applications/aphlict/management/PhabricatorAphlictManagementNotifyWorkflow.php
index a7653e74b5..129538f49b 100644
--- a/src/applications/aphlict/management/PhabricatorAphlictManagementNotifyWorkflow.php
+++ b/src/applications/aphlict/management/PhabricatorAphlictManagementNotifyWorkflow.php
@@ -1,81 +1,81 @@
 <?php
 
 final class PhabricatorAphlictManagementNotifyWorkflow
   extends PhabricatorAphlictManagementWorkflow {
 
   protected function didConstruct() {
     $this
       ->setName('notify')
       ->setSynopsis(pht('Send a notification to a user.'))
       ->setArguments(
         array(
           array(
             'name' => 'user',
             'param' => 'username',
             'help' => pht('User to notify.'),
           ),
           array(
             'name' => 'message',
             'param' => 'text',
             'help' => pht('Message to send.'),
           ),
         ));
   }
 
   public function execute(PhutilArgumentParser $args) {
     $viewer = $this->getViewer();
 
     $username = $args->getArg('user');
-    if (!strlen($username)) {
+    if (!phutil_nonempty_string($username)) {
       throw new PhutilArgumentUsageException(
         pht(
           'Specify a user to notify with "--user".'));
     }
 
     $user = id(new PhabricatorPeopleQuery())
       ->setViewer($viewer)
       ->withUsernames(array($username))
       ->executeOne();
 
     if (!$user) {
       throw new PhutilArgumentUsageException(
         pht(
           'No user with username "%s" exists.',
           $username));
     }
 
     $message = $args->getArg('message');
-    if (!strlen($message)) {
+    if (!phutil_nonempty_string($message)) {
       throw new PhutilArgumentUsageException(
         pht(
           'Specify a message to send with "--message".'));
     }
 
     $application_phid = id(new PhabricatorNotificationsApplication())
       ->getPHID();
 
     $content_source = $this->newContentSource();
 
     $xactions = array();
 
     $xactions[] = id(new PhabricatorUserTransaction())
       ->setTransactionType(
         PhabricatorUserNotifyTransaction::TRANSACTIONTYPE)
       ->setNewValue($message)
       ->setForceNotifyPHIDs(array($user->getPHID()));
 
     $editor = id(new PhabricatorUserTransactionEditor())
       ->setActor($viewer)
       ->setActingAsPHID($application_phid)
       ->setContentSource($content_source);
 
     $editor->applyTransactions($user, $xactions);
 
     echo tsprintf(
       "%s\n",
       pht('Sent notification.'));
 
     return 0;
   }
 
 }