diff --git a/watcher/applier/workflow_engine/base.py b/watcher/applier/workflow_engine/base.py
index 5f0bcf746..427165fbd 100644
--- a/watcher/applier/workflow_engine/base.py
+++ b/watcher/applier/workflow_engine/base.py
@@ -36,9 +36,6 @@ from watcher.objects import fields
 
 LOG = log.getLogger(__name__)
 
-CANCEL_STATE = [objects.action_plan.State.CANCELLING,
-                objects.action_plan.State.CANCELLED]
-
 
 class BaseWorkFlowEngine(loadable.Loadable, metaclass=abc.ABCMeta):
 
@@ -162,7 +159,7 @@ class BaseTaskFlowActionContainer(flow_task.Task):
             # so that taskflow does not schedule further actions.
             action_plan = objects.ActionPlan.get_by_id(
                 self.engine.context, self._db_action.action_plan_id)
-            if action_plan.state in CANCEL_STATE:
+            if action_plan.state in objects.action_plan.State.CANCEL_STATES:
                 raise exception.ActionPlanCancelled(uuid=action_plan.uuid)
             if self._db_action.state == objects.action.State.SKIPPED:
                 LOG.debug("Action %s is skipped manually",
@@ -245,7 +242,8 @@ class BaseTaskFlowActionContainer(flow_task.Task):
                 result = True
             if (action_object.state in [objects.action.State.SUCCEEDED,
                objects.action.State.FAILED] or
-               action_plan_object.state in CANCEL_STATE):
+               action_plan_object.state in
+               objects.action_plan.State.CANCEL_STATES):
                 break
             time.sleep(1)
         try:
@@ -255,7 +253,9 @@ class BaseTaskFlowActionContainer(flow_task.Task):
             # Not all actions support abort operations, kill only those action
             # which support abort operations
             abort = self.action.check_abort()
-            if (action_plan_object.state in CANCEL_STATE and abort):
+            if (action_plan_object.state in
+                objects.action_plan.State.CANCEL_STATES and
+                    abort):
                 et.kill()
             et.wait()
             return result
@@ -300,7 +300,7 @@ class BaseTaskFlowActionContainer(flow_task.Task):
         # NOTE: check if revert cause by cancel action plan or
         # some other exception occurred during action plan execution
         # if due to some other exception keep the flow intact.
-        if action_plan.state not in CANCEL_STATE:
+        if action_plan.state not in objects.action_plan.State.CANCEL_STATES:
             self.do_revert()
             return
 
diff --git a/watcher/objects/action_plan.py b/watcher/objects/action_plan.py
index 8426532f4..91eac9623 100644
--- a/watcher/objects/action_plan.py
+++ b/watcher/objects/action_plan.py
@@ -98,6 +98,8 @@ class State(object):
     SUPERSEDED = 'SUPERSEDED'
     CANCELLING = 'CANCELLING'
 
+    CANCEL_STATES = [CANCELLING, CANCELLED]
+
 
 @base.WatcherObjectRegistry.register
 class ActionPlan(base.WatcherPersistentObject, base.WatcherObject,