--- a/canfestival/config_utils.py	Fri Sep 22 20:12:22 2017 +0300
+++ b/canfestival/config_utils.py	Thu Sep 28 12:20:40 2017 +0300
@@ -156,7 +156,7 @@
     return "".join(dcfdata), len(dcfdata)
 
 
-class ConciseDCFGenerator:
+class ConciseDCFGenerator(object):
 
     def __init__(self, nodelist, nodename):
         # Dictionary of location informations classed by name