diff --git a/django_project/certification/tests/views/test_certificate_previews.py b/django_project/certification/tests/views/test_certificate_previews.py
index 099a91bbf..3faab7345 100644
--- a/django_project/certification/tests/views/test_certificate_previews.py
+++ b/django_project/certification/tests/views/test_certificate_previews.py
@@ -1,6 +1,5 @@
 # coding=utf-8
-import mock.mock
-from unittest.mock import patch, call
+from unittest.mock import patch
 from django.urls import reverse
 from django.test import TestCase, override_settings
 from django.test.client import Client