--- a/xmlclass/xmlclass.py	Fri Sep 22 20:12:22 2017 +0300
+++ b/xmlclass/xmlclass.py	Thu Sep 28 12:20:40 2017 +0300
@@ -752,7 +752,7 @@
     return ExtractElement
 
 
-class ClassFactory:
+class ClassFactory(object):
     """
     Class that generate class from an XML Tree
     """