diff --git a/apps/wpm/services.py b/apps/wpm/services.py
index b02b0497..2c27ca51 100644
--- a/apps/wpm/services.py
+++ b/apps/wpm/services.py
@@ -939,7 +939,7 @@ def handover_submit(handover:Handover, user: User, now: Union[datetime.datetime,
     ana_batch_thread(xbatchs=batches)
 
 
-def handover_revert(handover:Handover, handler:User):
+def handover_revert(handover:Handover, handler:User=None):
     if handover.submit_time is None:
         raise ParseError('该交接单未提交!')
     ticket:Ticket = handover.ticket