diff --git a/tests/test_create_packages_json.py b/tests/test_create_packages_json.py
index 562a477b..9c2ae750 100644
--- a/tests/test_create_packages_json.py
+++ b/tests/test_create_packages_json.py
@@ -57,7 +57,12 @@ class TestPackagesJson(TestCase):
             'pungi.scripts.create_packages_json.tempfile.NamedTemporaryFile',
         ) as mock_tempfile:
             mock_tempfile.return_value.__enter__.return_value.name = 'tmpfile'
-            file_name = PackagesGenerator.get_remote_file_content(
+            packages_generator = PackagesGenerator(
+                variants=[],
+                excluded_packages=[],
+                included_packages=[],
+            )
+            file_name = packages_generator.get_remote_file_content(
                 file_url='fakeurl')
             mock_requests_get.assert_called_once_with(url='fakeurl')
             mock_tempfile.assert_called_once_with(delete=False)