diff --git a/InvenTree/InvenTree/tests.py b/InvenTree/InvenTree/tests.py
index f89a8b073d..5353203391 100644
--- a/InvenTree/InvenTree/tests.py
+++ b/InvenTree/InvenTree/tests.py
@@ -7,6 +7,7 @@ import django.core.exceptions as django_exceptions
 from django.core.exceptions import ValidationError
 from django.contrib.auth import get_user_model
 from django.conf import settings
+from django.db.utils import IntegrityError
 
 from djmoney.money import Money
 from djmoney.contrib.exchange.models import Rate, convert_money
@@ -451,5 +452,13 @@ class TestSettings(TestCase):
         self.run_reload()
         self.assertEqual(user_count(), 1)
 
+        # enough set - duplicate entry
+        with self.assertRaises(IntegrityError):
+            self.env.set('INVENTREE_ADMIN_USER', 'admin')  # set username
+            self.env.set('INVENTREE_ADMIN_EMAIL', 'info@example.com')  # set email
+            self.env.set('INVENTREE_ADMIN_PASSWORD', 'password123')  # set password
+            self.run_reload()
+        self.assertEqual(user_count(), 1)
+
         # make sure to clean up
         settings.TESTING_ENV = False