diff --git a/pms-l10n-es/models/pms_checkin_partner.py b/pms-l10n-es/models/pms_checkin_partner.py
index 2d257790e..2d2d5ac5e 100644
--- a/pms-l10n-es/models/pms_checkin_partner.py
+++ b/pms-l10n-es/models/pms_checkin_partner.py
@@ -4,8 +4,14 @@ from odoo import api, fields, models
 class PmsCheckinPartner(models.Model):
     _inherit = "pms.checkin.partner"
 
-    lastname2 = fields.Char(
+    lastname = fields.Char(
         "Last Name",
+        compute="_compute_lastname",
+        store=True,
+        readonly=False,
+    )
+    lastname2 = fields.Char(
+        "Second Last Name",
         compute="_compute_lastname2",
         store=True,
         readonly=False,
@@ -51,6 +57,12 @@ class PmsCheckinPartner(models.Model):
         readonly=False,
     )
 
+    @api.depends("partner_id", "partner_id.lastname")
+    def _compute_lastname(self):
+        for record in self:
+            if not record.lastname:
+                record.lastname = record.partner_id.lastname
+
     @api.depends("partner_id", "partner_id.lastname2")
     def _compute_lastname2(self):
         for record in self:
diff --git a/pms-l10n-es/views/pms_checkin_partner_views.xml b/pms-l10n-es/views/pms_checkin_partner_views.xml
index d7a3dc3d1..8eefdeef2 100644
--- a/pms-l10n-es/views/pms_checkin_partner_views.xml
+++ b/pms-l10n-es/views/pms_checkin_partner_views.xml
@@ -25,6 +25,7 @@
         <field name="arch" type="xml">
             <data>
                 <xpath expr="//field[@name='partner_id']" position="after">
+                    <field name="lastname" />
                     <field name="lastname2" />
                     <field name="gender" />
                     <field name="birthdate_date" />
@@ -43,6 +44,7 @@
         <field name="arch" type="xml">
             <data>
                 <xpath expr="//field[@name='partner_id']" position="after">
+                    <field name="lastname" />
                     <field name="lastname2" />
                     <field name="gender" />
                     <field name="birthdate_date" />
@@ -61,6 +63,7 @@
         <field name="arch" type="xml">
             <data>
                 <xpath expr="//field[@name='partner_id']" position="after">
+                    <field name="lastname" />
                     <field name="lastname2" />
                     <field name="gender" />
                     <field name="birthdate_date" />
@@ -79,6 +82,7 @@
         <field name="arch" type="xml">
             <data>
                 <xpath expr="//field[@name='partner_id']" position="after">
+                    <field name="lastname" />
                     <field name="lastname2" />
                     <field name="gender" />
                     <field name="birthdate_date" />