diff --git a/apps/wf/services.py b/apps/wf/services.py
index cdeb841e..bde6b2d3 100755
--- a/apps/wf/services.py
+++ b/apps/wf/services.py
@@ -309,7 +309,7 @@ class WfService(object):
             f(ticket=ticket, transition=transition, new_ticket_data=new_ticket_data)
 
         # 校验处理权限
-        if not handler or not created:  # 没有处理人意味着系统触发不校验处理权限
+        if hander is None or not created:  # 没有处理人意味着系统触发不校验处理权限
             result = WfService.ticket_handle_permission_check(ticket, handler)
             if result.get('permission') is False:
                 raise PermissionDenied(result.get('msg'))