diff --git a/src/postorius/views/list.py b/src/postorius/views/list.py
index a22adbd..4cf7bd5 100644
--- a/src/postorius/views/list.py
+++ b/src/postorius/views/list.py
@@ -327,7 +327,7 @@
 @login_required
 @list_owner_required
 def list_mass_subscribe(request, list_id):
-    mailing_list = get_mailman_client().get_list(list_id)
+    mailing_list = List.objects.get_or_404(fqdn_listname=list_id)
     if request.method == 'POST':
         form = ListMassSubscription(request.POST)
         if form.is_valid():
@@ -403,7 +403,7 @@
 @login_required
 @list_moderator_required
 def list_moderation(request, list_id, held_id=-1):
-    mailing_list = get_mailman_client().get_list(list_id)
+    mailing_list = List.objects.get_or_404(fqdn_listname=list_id)
     if request.method == 'POST':
         form = MultipleChoiceForm(request.POST)
         if form.is_valid():