diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index d7f4cc73..8d4292bb 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -215,8 +215,8 @@ class MlogViewSet(CustomModelViewSet):
             vdata_new = MlogSerializer(ins).data
             create_auditlog('submit', ins, vdata_new,
                             vdata_old, now, self.request.user)
-        MyThread(cal_mtask_progress_from_mlog,args=(ins,)).start()
-        MyThread(cal_material_count_from_mlog,args=(ins,)).start()
+        MyThread(target=cal_mtask_progress_from_mlog,args=(ins,)).start()
+        MyThread(target=cal_material_count_from_mlog,args=(ins,)).start()
         return Response(vdata_new)
 
     @action(methods=['post'], detail=True, perms_map={'post': 'mlog.submit'}, serializer_class=MlogRevertSerializer)
@@ -236,8 +236,8 @@ class MlogViewSet(CustomModelViewSet):
             mlog_revert(ins, user, now)
             create_auditlog('revert', ins, {}, {}, now, user,
                         request.data.get('change_reason', ''))
-        MyThread(cal_mtask_progress_from_mlog,args=(ins,)).start()
-        MyThread(cal_material_count_from_mlog,args=(ins,)).start()
+        MyThread(target=cal_mtask_progress_from_mlog,args=(ins,)).start()
+        MyThread(target=cal_material_count_from_mlog,args=(ins,)).start()
         return Response(MlogSerializer(instance=ins).data)
 
     @action(methods=['post'], detail=False, perms_map={'post': '*'}, serializer_class=MlogRelatedSerializer)