diff --git a/src/applications/diffusion/view/DiffusionCommentListView.php b/src/applications/diffusion/view/DiffusionCommentListView.php
index 6c3aa00b69..713a2a300e 100644
--- a/src/applications/diffusion/view/DiffusionCommentListView.php
+++ b/src/applications/diffusion/view/DiffusionCommentListView.php
@@ -22,6 +22,7 @@ final class DiffusionCommentListView extends AphrontView {
   private $comments;
   private $inlineComments = array();
   private $pathMap = array();
+  private $handles = array();
 
   public function setUser(PhabricatorUser $user) {
     $this->user = $user;