diff --git a/src/applications/metamta/replyhandler/base/PhabricatorMailReplyHandler.php b/src/applications/metamta/replyhandler/base/PhabricatorMailReplyHandler.php
index 5ece39a14d..f131978d28 100644
--- a/src/applications/metamta/replyhandler/base/PhabricatorMailReplyHandler.php
+++ b/src/applications/metamta/replyhandler/base/PhabricatorMailReplyHandler.php
@@ -117,7 +117,7 @@ abstract class PhabricatorMailReplyHandler {
         $groups[$private][] = $recipient;
       }
     } else {
-      $groups[''] = array($recipients);
+      $groups[''] =$recipients;
     }
 
     // When multiplexing mail, explicitly include To/Cc information in the