diff --git a/addons/mail/views/mail_activity_views.xml b/addons/mail/views/mail_activity_views.xml
index addf80362ee..fdbfa3a5bdd 100644
--- a/addons/mail/views/mail_activity_views.xml
+++ b/addons/mail/views/mail_activity_views.xml
@@ -114,7 +114,7 @@
                         <field name="activity_category" invisible="1" />
                         <field name="res_model" invisible="1"/>
                         <field name="res_model_id" invisible="1"/>
-                        <field name="res_id" invisible="1"/>
+                        <field name="res_id" invisible="1" widget="integer"/>
                         <field name="force_next" invisible="1"/>
                         <field name="previous_activity_type_id"/>
                         <field name="has_recommended_activities"/>
diff --git a/addons/mail/views/mail_followers_views.xml b/addons/mail/views/mail_followers_views.xml
index ebcf7d0e44a..3dbd0ba7b1a 100644
--- a/addons/mail/views/mail_followers_views.xml
+++ b/addons/mail/views/mail_followers_views.xml
@@ -10,7 +10,7 @@
             <field name="arch" type="xml">
                 <tree string="Followers">
                     <field name="res_model"/>
-                    <field name="res_id"/>
+                    <field name="res_id" widget="integer"/>
                     <field name="partner_id"/>
                 </tree>
             </field>
@@ -28,7 +28,7 @@
                                 <field name="partner_id"/>
                             </group>
                             <group>
-                                <field name="res_id"/>
+                                <field name="res_id" widget="integer"/>
                                 <field name="subtype_ids" widget="many2many_tags"/>
                             </group>
                         </group>
diff --git a/addons/mail/views/mail_message_views.xml b/addons/mail/views/mail_message_views.xml
index 723ec9fa33e..6bb1bab6f49 100644
--- a/addons/mail/views/mail_message_views.xml
+++ b/addons/mail/views/mail_message_views.xml
@@ -12,7 +12,7 @@
                     <field name="subject"/>
                     <field name="author_id"/>
                     <field name="model"/>
-                    <field name="res_id"/>
+                    <field name="res_id" widget="integer"/>
                 </tree>
             </field>
         </record>
@@ -37,7 +37,7 @@
                             <group>
                                 <field name="parent_id"/>
                                 <field name="model"/>
-                                <field name="res_id"/>
+                                <field name="res_id" widget="integer"/>
                                 <field name="message_type"/>
                                 <field name="subtype_id"/>
                                 <field name="moderation_status"/>