diff --git a/addons/mail/__manifest__.py b/addons/mail/__manifest__.py
index b16ff03c90d..e13a8131df1 100644
--- a/addons/mail/__manifest__.py
+++ b/addons/mail/__manifest__.py
@@ -174,6 +174,7 @@ For more specific needs, you may also assign custom-defined actions
         ],
         'mail.assets_public': [
             'web/static/lib/jquery/jquery.js',
+            'web/static/lib/odoo_ui_icons/style.css',
             'web/static/src/libs/fontawesome/css/font-awesome.css',
             ('include', 'web._assets_helpers'),
             ('include', 'web._assets_backend_helpers'),