diff --git a/src/applications/pholio/controller/PholioInlineThumbController.php b/src/applications/pholio/controller/PholioInlineThumbController.php
index dfc906e689..219996fe26 100644
--- a/src/applications/pholio/controller/PholioInlineThumbController.php
+++ b/src/applications/pholio/controller/PholioInlineThumbController.php
@@ -7,6 +7,10 @@ final class PholioInlineThumbController extends PholioController {
 
   private $imageid;
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function willProcessRequest(array $data) {
     $this->imageid = idx($data, 'imageid');
   }