diff --git a/sale.py b/sale.py
index 9748bf9..32100bc 100644
--- a/sale.py
+++ b/sale.py
@@ -11,8 +11,7 @@ from trytond import backend
 __all__ = ['Sale']
 
 
-class Sale:
-    __metaclass__ = PoolMeta
+class Sale(metaclass=PoolMeta):
     __name__ = 'sale.sale'
 
     employee = fields.Many2One('company.employee', 'Salesman',
diff --git a/setup.py b/setup.py
index 8447536..42d1309 100644
--- a/setup.py
+++ b/setup.py
@@ -7,10 +7,7 @@ from setuptools import setup
 import re
 import os
 import io
-try:
-    from configparser import ConfigParser
-except ImportError:
-    from ConfigParser import ConfigParser
+from configparser import ConfigParser
 
 MODULE = 'sale_salesman'
 PREFIX = 'trytonzz'