diff --git a/watcher/common/exception.py b/watcher/common/exception.py
index 06e434144..cc2703793 100644
--- a/watcher/common/exception.py
+++ b/watcher/common/exception.py
@@ -267,9 +267,7 @@ class ActionPlanReferenced(Invalid):
 
 
 class ActionPlanIsOngoing(Conflict):
-    msg_fmt = _("Action Plan %(action_plan)s is currently running. "
-                "New Action Plan %(new_action_plan)s will be set as "
-                "SUPERSEDED")
+    msg_fmt = _("Action Plan %(action_plan)s is currently running.")
 
 
 class ActionNotFound(ResourceNotFound):
diff --git a/watcher/decision_engine/audit/base.py b/watcher/decision_engine/audit/base.py
index 0b298d504..092374b0a 100644
--- a/watcher/decision_engine/audit/base.py
+++ b/watcher/decision_engine/audit/base.py
@@ -102,23 +102,24 @@ class AuditHandler(BaseAuditHandler):
         audit.state = state
         audit.save()
 
+    @staticmethod
+    def check_ongoing_action_plans(request_context):
+        a_plan_filters = {'state': objects.action_plan.State.ONGOING}
+        ongoing_action_plans = objects.ActionPlan.list(
+            request_context, filters=a_plan_filters)
+        if ongoing_action_plans:
+            raise exception.ActionPlanIsOngoing(
+                action_plan=ongoing_action_plans[0].uuid)
+
     def pre_execute(self, audit, request_context):
         LOG.debug("Trigger audit %s", audit.uuid)
+        self.check_ongoing_action_plans(request_context)
         # change state of the audit to ONGOING
         self.update_audit_state(audit, objects.audit.State.ONGOING)
 
     def post_execute(self, audit, solution, request_context):
         action_plan = self.do_schedule(request_context, audit, solution)
-        a_plan_filters = {'state': objects.action_plan.State.ONGOING}
-        ongoing_action_plans = objects.ActionPlan.list(
-            request_context, filters=a_plan_filters)
-        if ongoing_action_plans:
-            action_plan.state = objects.action_plan.State.SUPERSEDED
-            action_plan.save()
-            raise exception.ActionPlanIsOngoing(
-                action_plan=ongoing_action_plans[0].uuid,
-                new_action_plan=action_plan.uuid)
-        elif audit.auto_trigger:
+        if audit.auto_trigger:
             applier_client = rpcapi.ApplierAPI()
             applier_client.launch_action_plan(request_context,
                                               action_plan.uuid)
diff --git a/watcher/tests/decision_engine/audit/test_audit_handlers.py b/watcher/tests/decision_engine/audit/test_audit_handlers.py
index c5b334e4f..5d0f1d826 100644
--- a/watcher/tests/decision_engine/audit/test_audit_handlers.py
+++ b/watcher/tests/decision_engine/audit/test_audit_handlers.py
@@ -19,7 +19,6 @@ import mock
 from oslo_utils import uuidutils
 
 from watcher.applier import rpcapi
-from watcher.common import exception
 from watcher.decision_engine.audit import continuous
 from watcher.decision_engine.audit import oneshot
 from watcher.decision_engine.model.collector import manager
@@ -190,16 +189,14 @@ class TestAutoTriggerActionPlan(base.DbTestCase):
             strategy=self.strategy,
         )
 
+    @mock.patch.object(oneshot.OneShotAuditHandler, 'do_execute')
     @mock.patch.object(objects.action_plan.ActionPlan, 'list')
-    @mock.patch.object(objects.audit.Audit, 'get_by_id')
-    def test_trigger_action_plan_with_ongoing(self, mock_get_by_id, mock_list):
-        mock_get_by_id.return_value = self.audit
+    def test_trigger_audit_with_actionplan_ongoing(self, mock_list,
+                                                   mock_do_execute):
         mock_list.return_value = [self.ongoing_action_plan]
-        auto_trigger_handler = oneshot.OneShotAuditHandler(mock.MagicMock())
-        with mock.patch.object(auto_trigger_handler, 'do_schedule'):
-            self.assertRaises(exception.ActionPlanIsOngoing,
-                              auto_trigger_handler.post_execute,
-                              self.audit, mock.MagicMock(), self.context)
+        audit_handler = oneshot.OneShotAuditHandler(mock.MagicMock())
+        audit_handler.execute(self.audit, self.context)
+        self.assertFalse(mock_do_execute.called)
 
     @mock.patch.object(rpcapi.ApplierAPI, 'launch_action_plan')
     @mock.patch.object(objects.action_plan.ActionPlan, 'list')