diff --git a/apps/wpm/views.py b/apps/wpm/views.py
index b63cc967..a71c874c 100644
--- a/apps/wpm/views.py
+++ b/apps/wpm/views.py
@@ -422,7 +422,7 @@ class MlogViewSet(CustomModelViewSet):
         sr_2.is_valid(raise_exception=True)
         mlogbin = sr_2.save()
         MlogbInViewSet.p_create_after(mlogbin)
-        return Response({"mlog": mlog.id})
+        return Response({"mlog": str(mlog.id)})
 
 class HandoverViewSet(CustomModelViewSet):
     """