diff --git a/addons/mail/static/src/css/mail.css b/addons/mail/static/src/css/mail.css
index f8fef969475..91fda693193 100644
--- a/addons/mail/static/src/css/mail.css
+++ b/addons/mail/static/src/css/mail.css
@@ -92,7 +92,7 @@
 }
 
 .oe_mail_thread_subthread {
-    padding-left: 25%;
+    padding-left: 5%;
 }
 
 .oe_mail_thread_more {
diff --git a/addons/mail/static/src/js/mail.js b/addons/mail/static/src/js/mail.js
index 78cfaa5f974..1372ccc3803 100644
--- a/addons/mail/static/src/js/mail.js
+++ b/addons/mail/static/src/js/mail.js
@@ -137,7 +137,7 @@ openerp.mail = function(session) {
                     self.display_comment(record);
                     self.thread = new mail.Thread(self, {'res_model': self.params.res_model, 'res_id': self.params.res_id, 'uid': self.params.uid,
                                                             'records': sub_msgs, 'thread_level': (self.params.thread_level-1), 'parent_id': record.id});
-                    self.$element.find('div.oe_mail_thread_msg:last').append('<div class="oe_mail_thread_subthread"/>');
+                    self.$element.find('div.oe_mail_thread_display:last').append('<div class="oe_mail_thread_subthread"/>');
                     self.thread.appendTo(self.$element.find('div.oe_mail_thread_subthread:last'));
                 }
                 else if (self.params.thread_level == 0) {