diff --git a/apps/wf/services.py b/apps/wf/services.py
index 3b6dcad3..0b22ed02 100755
--- a/apps/wf/services.py
+++ b/apps/wf/services.py
@@ -307,7 +307,8 @@ class WfService(object):
                 if workflow and transition.workflow.id != workflow.id:
                     raise ParseError("当前流转不属于该工作流")
                 workflow = transition.workflow
-                
+            if not workflow:
+                raise ParseError("未找到工作流")
             start_state = WfService.get_workflow_start_state(workflow)
             save_ticket_data = {}
             if transition and transition.field_require_check: