diff --git a/containers/api/controllers/v2.py b/containers/api/controllers/v2.py
index 282aef0107..55cd4d97ec 100644
--- a/containers/api/controllers/v2.py
+++ b/containers/api/controllers/v2.py
@@ -20,6 +20,7 @@ from pecan import rest, response
 import six
 
 
+state_kind = ["ok", "containers", "insufficient data"]
 state_kind_enum = wtypes.Enum(str, *state_kind)
 operation_kind = ('lt', 'le', 'eq', 'ne', 'ge', 'gt')
 operation_kind_enum = wtypes.Enum(str, *operation_kind)