diff --git a/mail_to/__manifest__.py b/mail_to/__manifest__.py
index 9844b2e..98d0170 100644
--- a/mail_to/__manifest__.py
+++ b/mail_to/__manifest__.py
@@ -1,5 +1,5 @@
 # Copyright 2016 x620 <https://github.com/x620>
-# Copyright 2016 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+# Copyright 2016,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
 # Copyright 2018 Ruslan Ronzhin
 # Copyright 2019 Artem Rafailov <https://it-projects.info/team/Ommo73/>
 # License LGPL-3.0 (https://www.gnu.org/licenses/lgpl.html).
@@ -8,7 +8,7 @@
     "summary": """Allows you be sure, that all discussion participants were notified""",
     "category": "Discuss",
     "images": ["images/1.png"],
-    "version": "12.0.1.1.0",
+    "version": "12.0.1.1.1",
     "author": "IT-Projects LLC, Pavel Romanchenko",
     "support": "apps@itpp.dev",
     "website": "https://it-projects.info",
diff --git a/mail_to/doc/changelog.rst b/mail_to/doc/changelog.rst
index 3e341ea..a5f084c 100644
--- a/mail_to/doc/changelog.rst
+++ b/mail_to/doc/changelog.rst
@@ -1,3 +1,8 @@
+`1.1.1`
+-------
+
+- **Fix**: Error on sending bot commands
+
 `1.1.0`
 -------
 
diff --git a/mail_to/static/src/js/mail_to.js b/mail_to/static/src/js/mail_to.js
index 7d7589f..c3ae242 100644
--- a/mail_to/static/src/js/mail_to.js
+++ b/mail_to/static/src/js/mail_to.js
@@ -1,5 +1,5 @@
 /* Copyright 2016 x620 <https://github.com/x620>
- * Copyright 2016-2017 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
+ * Copyright 2016-2017,2020 Ivan Yelizariev <https://it-projects.info/team/yelizariev>
  * Copyright 2017 Artyom Losev <https://it-projects.info/>
  * Copyright 2019 Artem Rafailov <https://it-projects.info/team/Ommo73/>
  * Copyright 2019-2020 Eugene Molotov <https://it-projects.info/team/em230418>
@@ -15,7 +15,7 @@ odoo.define("mail_to.MailTo", function(require) {
             msg.partner_ids = data.partner_ids;
             msg.channel_names = data.channel_names;
             msg.channel_ids = data.channel_ids;
-            msg.recipients = data.partner_ids.concat(
+            msg.recipients = (data.partner_ids || []).concat(
                 data.channel_names ? data.channel_names : []
             );
             if (!msg.partner_ids && !msg.channel_names) {