diff --git a/src/applications/pholio/controller/PholioInlineThumbController.php b/src/applications/pholio/controller/PholioInlineThumbController.php
index dfc906e68..219996fe2 100644
--- a/src/applications/pholio/controller/PholioInlineThumbController.php
+++ b/src/applications/pholio/controller/PholioInlineThumbController.php
@@ -1,40 +1,44 @@
 <?php
 
 /**
  * @group pholio
  */
 final class PholioInlineThumbController extends PholioController {
 
   private $imageid;
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function willProcessRequest(array $data) {
     $this->imageid = idx($data, 'imageid');
   }
 
   public function processRequest() {
     $request = $this->getRequest();
     $user = $request->getUser();
 
     $image = id(new PholioImage())->load($this->imageid);
 
     if ($image == null) {
       return new Aphront404Response();
     }
 
     $mock = id(new PholioMockQuery())
       ->setViewer($user)
       ->withIDs(array($image->getMockID()))
       ->executeOne();
 
     if (!$mock) {
       return new Aphront404Response();
     }
 
     $file = id(new PhabricatorFile())->loadOneWhere(
       'phid = %s',
       $image->getFilePHID());
 
     return id(new AphrontRedirectResponse())->setURI($file->getThumb60x45URI());
   }
 
 }