diff --git a/addons/mail/static/src/js/many2many_tags_email.js b/addons/mail/static/src/js/many2many_tags_email.js
index e11a147d8e1..e4638d41d28 100644
--- a/addons/mail/static/src/js/many2many_tags_email.js
+++ b/addons/mail/static/src/js/many2many_tags_email.js
@@ -48,7 +48,7 @@ BasicModel.include({
                 def = self._rpc({
                     model: list.model,
                     method: 'name_get',
-                    args: list.res_ids,
+                    args: [list.res_ids],
                     context: record.getContext({fieldName: fieldName}),
                 });
             }