diff --git a/maintenance.py b/maintenance.py
index b06c8a4..1f6cd14 100644
--- a/maintenance.py
+++ b/maintenance.py
@@ -13,7 +13,7 @@ from trytond.modules.product import price_digits
 import datetime
 from datetime import timedelta
 
-from scipy.stats import t
+#from scipy.stats import t
 import matplotlib.pyplot as plt
 import numpy as np
 import math as mt
diff --git a/sale.xml b/sale.xml
index 8050209..426f495 100644
--- a/sale.xml
+++ b/sale.xml
@@ -6,6 +6,11 @@
 	<field name="inherit" ref="sale.sale_view_form"/>
 	<field name="name">sale_form</field>
     </record>
+    <record model="ir.ui.view" id="product_view_list_sale_line">
+	<field name="model">product.product</field>
+	<field name="inherit" ref="sale.product_view_list_sale_line"/>
+	<field name="name">product_list_sale_line</field>
+    </record>
     <record model="ir.action.report" id="report_sale">
         <field name="name">Sale Equipments</field>
         <field name="model">sale.sale</field>