--- a/etherlab/EthercatCFileGenerator.py	Sat Sep 29 16:39:25 2018 +0300
+++ b/etherlab/EthercatCFileGenerator.py	Sat Sep 29 16:40:56 2018 +0300
@@ -137,7 +137,7 @@
     return -cmp(x["matching"], y["matching"])
 
 
-class _EthercatCFileGenerator:
+class _EthercatCFileGenerator(object):
 
     def __init__(self, controler):
         self.Controler = controler