diff --git a/rma_account/models/rma_operation.py b/rma_account/models/rma_operation.py
index a42c69c7..201d1f46 100644
--- a/rma_account/models/rma_operation.py
+++ b/rma_account/models/rma_operation.py
@@ -1,7 +1,7 @@
 # -*- coding: utf-8 -*-
 # © 2017 Eficent Business and IT Consulting Services S.L.
 # License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
-from openerp import _, api, fields, models
+from openerp import fields, models
 
 
 class RmaOperation(models.Model):
diff --git a/rma_account/models/rma_order.py b/rma_account/models/rma_order.py
index fdcba820..10ca3d08 100644
--- a/rma_account/models/rma_order.py
+++ b/rma_account/models/rma_order.py
@@ -1,12 +1,7 @@
 # -*- coding: utf-8 -*-
 # © 2017 Eficent Business and IT Consulting Services S.L.
 # License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
-from openerp import _, api, fields, models
-from openerp.addons import decimal_precision as dp
-from openerp.exceptions import UserError
-from dateutil.relativedelta import relativedelta
-from openerp.tools import DEFAULT_SERVER_DATE_FORMAT
-from datetime import datetime
+from openerp import api, fields, models
 
 
 class RmaOrder(models.Model):
diff --git a/rma_account/wizards/rma_add_invoice.py b/rma_account/wizards/rma_add_invoice.py
index 45a7e662..a81d1098 100644
--- a/rma_account/wizards/rma_add_invoice.py
+++ b/rma_account/wizards/rma_add_invoice.py
@@ -3,10 +3,8 @@
 # License LGPL-3.0 or later (https://www.gnu.org/licenses/lgpl.html)
 
 import time
-from openerp import models, fields, exceptions, api, _
+from openerp import _, api, fields, models
 from openerp.exceptions import ValidationError
-from openerp.tools import DEFAULT_SERVER_DATETIME_FORMAT as DT_FORMAT
-import openerp.addons.decimal_precision as dp
 
 
 class RmaAddinvoice(models.TransientModel):
diff --git a/rma_account/wizards/rma_order_line_make_supplier_rma.py b/rma_account/wizards/rma_order_line_make_supplier_rma.py
index 9315161a..3f798c67 100644
--- a/rma_account/wizards/rma_order_line_make_supplier_rma.py
+++ b/rma_account/wizards/rma_order_line_make_supplier_rma.py
@@ -3,7 +3,7 @@
 # License LGPL-3.0 or later (http://www.gnu.org/licenses/lgpl-3.0).
 
 import openerp.addons.decimal_precision as dp
-from openerp import _, api, exceptions, fields, models
+from openerp import api, models
 
 
 class RmaLineMakeSupplierRma(models.TransientModel):