diff --git a/ldapcherry/backend/__init__.py b/ldapcherry/backend/__init__.py
index 77a6ed1..c352aa8 100644
--- a/ldapcherry/backend/__init__.py
+++ b/ldapcherry/backend/__init__.py
@@ -8,7 +8,7 @@
 from ldapcherry.exceptions import MissingParameter
 
 
-class Backend:
+class Backend(object):
 
     def __init__(self, config, logger, name, attrslist, key):
         """ Initialize the backend