diff --git a/lib/ansible/inventory/__init__.py b/lib/ansible/inventory/__init__.py
index 9870648cee..43a6084cbd 100644
--- a/lib/ansible/inventory/__init__.py
+++ b/lib/ansible/inventory/__init__.py
@@ -43,9 +43,9 @@ class Inventory(object):
     Host inventory for ansible.
     """
 
-    __slots__ = [ 'host_list', 'groups', '_restriction', '_also_restriction', '_subset',
-                  'parser', '_vars_per_host', '_vars_per_group', '_hosts_cache', '_groups_list',
-                  '_pattern_cache', '_vault_password', '_vars_plugins', '_playbook_basedir']
+    #__slots__ = [ 'host_list', 'groups', '_restriction', '_also_restriction', '_subset',
+    #              'parser', '_vars_per_host', '_vars_per_group', '_hosts_cache', '_groups_list',
+    #              '_pattern_cache', '_vault_password', '_vars_plugins', '_playbook_basedir']
 
     def __init__(self, loader, variable_manager, host_list=C.DEFAULT_HOST_LIST):