diff --git a/src/applications/differential/controller/DifferentialDiffViewController.php b/src/applications/differential/controller/DifferentialDiffViewController.php
index 7ef66f198b..044ce2e38a 100644
--- a/src/applications/differential/controller/DifferentialDiffViewController.php
+++ b/src/applications/differential/controller/DifferentialDiffViewController.php
@@ -4,6 +4,10 @@ final class DifferentialDiffViewController extends DifferentialController {
 
   private $id;
 
+  public function shouldAllowPublic() {
+    return true;
+  }
+
   public function willProcessRequest(array $data) {
     $this->id = $data['id'];
   }