diff --git a/addons/mail/static/src/js/client_action.js b/addons/mail/static/src/js/client_action.js
index e611404b07c..52e67c60f68 100644
--- a/addons/mail/static/src/js/client_action.js
+++ b/addons/mail/static/src/js/client_action.js
@@ -221,7 +221,9 @@ var ChatAction = Widget.extend(ControlPanelMixin, {
         this.$buttons.on('click', '.o_mail_chat_button_mark_read', function () {
             chat_manager.mark_all_as_read(self.channel, self.domain);
         });
-        this.$buttons.on('click', '.o_mail_chat_button_unstar_all', chat_manager.unstar_all);
+        this.$buttons.on('click', '.o_mail_chat_button_unstar_all', function () {
+            chat_manager.unstar_all();
+        });
 
         this.thread.on('redirect', this, function (res_model, res_id) {
             chat_manager.redirect(res_model, res_id, this.set_channel.bind(this));