diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 8735274e..4e802fdf 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -969,7 +969,7 @@ class MlogbwViewSet(CustomModelViewSet):
             mlog.cal_mlog_count_from_mlogb()
     
     def after_bulk_update(self, objs):
-        mlogbIds = list(set([obj.mlogb for obj in objs]))
+        mlogbIds = list(set([obj["mlogb"] for obj in objs]))
         for mlogbId in mlogbIds:
             mlogbw = Mlogbw.objects.get(id=mlogbId)
             Mlogbw.cal_count_notok(mlogbw.mlogb)