diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index 4616142d..54cdf841 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -561,6 +561,8 @@ class MlogbInViewSet(CreateModelMixin, UpdateModelMixin, DestroyModelMixin, Cust
             qs.delete()
             if ftestIds:
                 Ftest.objects.filter(id__in=ftestIds).delete()
+        if ins.mlogb_to:
+            ins.mlogb_to.delete()
         Mlogb.objects.filter(id__in=Mlogbw.objects.filter(mlogb=ins).values_list("mlogb_to__id", flat=True)).delete()
         ins.delete()