diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 8cf47c53..3cdf9e36 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -550,14 +550,13 @@ class MlogbwViewSet(CustomModelViewSet):
 
     @transaction.atomic
     def perform_create(self, serializer):
-        ins = super().perform_create(serializer)
+        ins = serializer.save()
         self.cal_mlogb_count(ins.mlogb)
-        return ins
 
     @transaction.atomic
     def perform_destroy(self, instance):
         mlogb = instance.mlogb
-        super().perform_destroy(instance)
+        instance.delete()
         self.cal_mlogb_count(mlogb)