diff --git a/addons/mail/static/src/js/composer.js b/addons/mail/static/src/js/composer.js
index ceabd672d7e..ae17f4a9854 100644
--- a/addons/mail/static/src/js/composer.js
+++ b/addons/mail/static/src/js/composer.js
@@ -243,7 +243,7 @@ var MentionManager = Widget.extend({
     },
 
     get_selection_id: function (match, selection) {
-        var m = match[1][0].slice(1);
+        var m = match[0].slice(1);
         _.each(selection, function (s) {
             if(s.name == m){
                 return s.id;