diff --git a/hotel/models/hotel_board_service.py b/hotel/models/hotel_board_service.py
index 94accdfcc..c4774e4d7 100644
--- a/hotel/models/hotel_board_service.py
+++ b/hotel/models/hotel_board_service.py
@@ -1,6 +1,6 @@
 # Copyright 2017  Dario Lodeiros
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
-from openerp import models, fields, api, _
+from odoo import models, fields
 
 
 class HotelBoardService(models.Model):
@@ -9,7 +9,7 @@ class HotelBoardService(models.Model):
 
     name = fields.Char('Board Name', size=64, required=True, index=True)
     service_ids = fields.Many2many(comodel_name='product.template',
-                                      relation='board_services_room',
-                                      column1='board_id',
-                                      column2='service_id')
-    sequence = fields.Integer('Sequence', size=64)
+                                   relation='hotel_board_services_room',
+                                   column1='board_id',
+                                   column2='service_id')
+    sequence = fields.Integer('Sequence')
diff --git a/hotel/models/hotel_room_type_class.py b/hotel/models/hotel_room_type_class.py
index 281158a58..89d78fcf9 100644
--- a/hotel/models/hotel_room_type_class.py
+++ b/hotel/models/hotel_room_type_class.py
@@ -12,7 +12,7 @@ class HotelRoomTypeClass(models.Model):
     _name = "hotel.room.type.class"
     _description = "Room Type Class"
     _order = "sequence, code_class, name"
-    _sql_constraints = [('code_type_unique', 'unique(code_type)',
+    _sql_constraints = [('code_class_unique', 'unique(code_class)',
                          'code must be unique!')]
 
     name = fields.Char('Class Name', required=True, translate=True)