diff --git a/addons/mail/res_users_view.xml b/addons/mail/res_users_view.xml
index d739e56661e..5fdc77821f8 100644
--- a/addons/mail/res_users_view.xml
+++ b/addons/mail/res_users_view.xml
@@ -33,7 +33,7 @@
                 </xpath>
                 <field name="user_email" position="after">
                     <field name="alias_domain" invisible="1"/>
-                    <field name="alias_id" readonly="1" attrs="{'invisible': [('alias_domain', '=', False)]}"/>
+                    <field name="alias_id" readonly="1" required="0" attrs="{'invisible': [('alias_domain', '=', False)]}"/>
                 </field>
             </data>
             </field>