diff --git a/addons/mass_mailing/views/mailing_mailing_views.xml b/addons/mass_mailing/views/mailing_mailing_views.xml
index a6b71889982..22c9c2ccbeb 100644
--- a/addons/mass_mailing/views/mailing_mailing_views.xml
+++ b/addons/mass_mailing/views/mailing_mailing_views.xml
@@ -218,8 +218,7 @@
                                             <field name="attachment_ids"  widget="many2many_binary" string="Attach a file" class="oe_inline"
                                                 attrs="{'readonly': [('state', 'in', ('sending', 'done'))]}"/>
                                         </div>
-                                        <field name="mail_server_id" groups="base.group_no_one" options="{'no_create': True, 'no_open': True}"
-                                            attrs="{'readonly': [('state', 'in', ('sending', 'done'))]}"/>
+                                        <field name="mail_server_id" groups="base.group_no_one" options="{'no_create': True, 'no_open': True}"/>
                                         <field name="keep_archives" groups="base.group_no_one" attrs="{'readonly': [('state', 'in', ('sending', 'done'))]}"/>
                                     </group>
                                     <group string="Marketing" groups="base.group_no_one,mass_mailing.group_mass_mailing_campaign">
diff --git a/addons/mass_mailing_sms/views/mailing_mailing_views.xml b/addons/mass_mailing_sms/views/mailing_mailing_views.xml
index 9e1f48af3bc..989a4626440 100644
--- a/addons/mass_mailing_sms/views/mailing_mailing_views.xml
+++ b/addons/mass_mailing_sms/views/mailing_mailing_views.xml
@@ -138,10 +138,7 @@
                 <attribute name="attrs">{'invisible': [('mailing_type', '!=', 'mail')]}</attribute>
             </xpath>
             <xpath expr="//field[@name='mail_server_id']" position="attributes">
-                <attribute name="attrs">{
-                    'invisible': [('mailing_type', '!=', 'mail')],
-                    'readonly': [('state', 'in', ('sending', 'done'))]}
-                </attribute>
+                <attribute name="attrs">{'invisible': [('mailing_type', '!=', 'mail')]}</attribute>
             </xpath>
         </field>
     </record>