diff --git a/tests/main/test_main.py b/tests/main/test_main.py
index 79a1897..d2fa877 100644
--- a/tests/main/test_main.py
+++ b/tests/main/test_main.py
@@ -119,6 +119,28 @@ class MailingListTreeTestCase(TestCase):
                 self.assertEqual(mwo[self.users[j]], set(self.mls[i : j + 1]))
 
 
+@pytest.mark.django_db
+def test_admin_mailing_list(admin, client):
+    users = []
+    mls = []
+    for i in range(20):
+        users.append(User.objects.create(username='%s' % i))
+    sublist = []
+    for i in range(19, -1, -1):
+        mls.insert(0, MailingList.objects.create(name='%s' % i))
+        mls[0].members.set([users[i]])
+        mls[0].mailing_list_members.set(sublist)
+        sublist = [mls[0]]
+
+    client.login(username='admin', password='admin')
+    from django.db import connection as conn
+    from django.test.utils import CaptureQueriesContext
+
+    with CaptureQueriesContext(conn) as context:
+        resp = client.get('/admin/docbow/mailinglist/?q=' + ('a%20' * 10))
+    assert context[-1]['sql'].count('UPPER') == 80
+
+
 class MailingListCycle(TestCase):
     '''Test mailing lists member resolution in a cyclic setup.'''
 
diff --git a/tox.ini b/tox.ini
index de52e4d..1a1c4ef 100644
--- a/tox.ini
+++ b/tox.ini
@@ -6,7 +6,7 @@ envlist = {pw,pfwb,mellon,pfwbmellon},codestyle
 usedevelop = True
 deps =
   django>=3.2.12,<3.3
-  pfwb: SQLAlchemy-Utils
+  pfwb,pfwbmellon: SQLAlchemy-Utils
   mellon: django-mellon
   pfwbmellon: django-mellon
   -r test-requirements.txt