From 2275df3bcaf41804c1c001a45db0310187984fdf Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 25 May 2018 15:54:43 +0200
Subject: [PATCH] Fix js error when flagging a message as unread

---
 program/js/app.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/program/js/app.js b/program/js/app.js
index ae1e00f2190..591324580ad 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -3470,7 +3470,7 @@ function rcube_webmail()
   // with select_all mode checking
   this.uids_to_list = function(uids)
   {
-    return this.select_all_mode ? '*' : (uids.length <= 1 ? uids.join(',') : uids);
+    return this.select_all_mode ? '*' : ($.isArray(uids) ? uids.join(',') : uids);
   };
 
   // Sets title of the delete button