diff --git a/src/applications/files/controller/PhabricatorFileDocumentController.php b/src/applications/files/controller/PhabricatorFileDocumentController.php
index b74d98f48e..61bf4427cf 100644
--- a/src/applications/files/controller/PhabricatorFileDocumentController.php
+++ b/src/applications/files/controller/PhabricatorFileDocumentController.php
@@ -1,113 +1,117 @@
 <?php
 
 final class PhabricatorFileDocumentController
   extends PhabricatorFileController {
 
   private $file;
   private $engine;
   private $ref;
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function handleRequest(AphrontRequest $request) {
     $viewer = $request->getViewer();
 
     $file_phid = $request->getURIData('phid');
 
     $file = id(new PhabricatorFileQuery())
       ->setViewer($viewer)
       ->withPHIDs(array($file_phid))
       ->executeOne();
     if (!$file) {
       return $this->newErrorResponse(
         pht(
           'This file ("%s") does not exist or could not be loaded.',
           $file_phid));
     }
     $this->file = $file;
 
     $ref = id(new PhabricatorDocumentRef())
       ->setFile($file);
     $this->ref = $ref;
 
     $engines = PhabricatorDocumentEngine::getEnginesForRef($viewer, $ref);
     $engine_key = $request->getURIData('engineKey');
     if (!isset($engines[$engine_key])) {
       return $this->newErrorResponse(
         pht(
           'The engine ("%s") is unknown, or unable to render this document.',
           $engine_key));
     }
     $engine = $engines[$engine_key];
     $this->engine = $engine;
 
     try {
       $content = $engine->newDocument($ref);
     } catch (Exception $ex) {
       return $this->newErrorResponse($ex->getMessage());
     }
 
     return $this->newContentResponse($content);
   }
 
   private function newErrorResponse($message) {
     $container = phutil_tag(
       'div',
       array(
         'class' => 'document-engine-error',
       ),
       array(
         id(new PHUIIconView())
           ->setIcon('fa-exclamation-triangle red'),
         ' ',
         $message,
       ));
 
     return $this->newContentResponse($container);
   }
 
 
   private function newContentResponse($content) {
     $viewer = $this->getViewer();
     $request = $this->getRequest();
 
     $file = $this->file;
     $engine = $this->engine;
     $ref = $this->ref;
 
     if ($request->isAjax()) {
       return id(new AphrontAjaxResponse())
         ->setContent(
           array(
             'markup' => hsprintf('%s', $content),
           ));
     }
 
     $crumbs = $this->buildApplicationCrumbs();
     if ($file) {
       $crumbs->addTextCrumb($file->getMonogram(), $file->getInfoURI());
     }
 
     $label = $engine->getViewAsLabel($ref);
     if ($label) {
       $crumbs->addTextCrumb($label);
     }
 
     $crumbs->setBorder(true);
 
     $content_frame = id(new PHUIObjectBoxView())
       ->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
       ->appendChild($content);
 
     $page_frame = id(new PHUITwoColumnView())
       ->setFooter($content_frame);
 
     return $this->newPage()
       ->setCrumbs($crumbs)
       ->setTitle(
         array(
           $ref->getName(),
           pht('Standalone'),
         ))
       ->appendChild($page_frame);
   }
 
 }