diff --git a/src/Vervis/Handler/Ticket.hs b/src/Vervis/Handler/Ticket.hs
index aa12c4c..ad85d29 100644
--- a/src/Vervis/Handler/Ticket.hs
+++ b/src/Vervis/Handler/Ticket.hs
@@ -222,9 +222,10 @@ postTicketCloseR shr prj num = do
             then return False
             else do
                 update tid
-                    [ TicketDone   =. True
-                    , TicketClosed =. now
-                    , TicketCloser =. pid
+                    [ TicketAssignee =. Nothing
+                    , TicketDone     =. True
+                    , TicketClosed   =. now
+                    , TicketCloser   =. pid
                     ]
                 return True
     setMessage $