diff --git a/mayan/apps/common/generics.py b/mayan/apps/common/generics.py
index 1ff511c2a9..e3d6b3fe93 100644
--- a/mayan/apps/common/generics.py
+++ b/mayan/apps/common/generics.py
@@ -14,7 +14,9 @@ from django.views.generic.edit import (
 )
 from django.views.generic.list import ListView
 
-from django_downloadview import VirtualDownloadView, VirtualFile
+from django_downloadview import (
+    TextIteratorIO, VirtualDownloadView, VirtualFile
+)
 from pure_pagination.mixins import PaginationMixin
 
 from .forms import ChoiceForm
@@ -388,6 +390,7 @@ class SingleObjectDetailView(ViewPermissionCheckMixin, ObjectPermissionCheckMixi
 
 
 class SingleObjectDownloadView(ViewPermissionCheckMixin, ObjectPermissionCheckMixin, VirtualDownloadView, SingleObjectMixin):
+    TextIteratorIO = TextIteratorIO
     VirtualFile = VirtualFile
 
 
diff --git a/mayan/apps/common/tests/base.py b/mayan/apps/common/tests/base.py
index 8f97a74274..29a23d111c 100644
--- a/mayan/apps/common/tests/base.py
+++ b/mayan/apps/common/tests/base.py
@@ -2,6 +2,8 @@ from __future__ import absolute_import, unicode_literals
 
 from django.test import TestCase
 
+from django_downloadview import assert_download_response
+
 from permissions.classes import Permission
 from smart_settings.classes import Namespace
 
@@ -14,6 +16,7 @@ class BaseTestCase(ContentTypeCheckMixin, OpenFileCheckMixin, TempfileCheckMixin
     """
     This is the most basic test case class any test in the project should use.
     """
+    assert_download_response = assert_download_response
 
     def setUp(self):
         super(BaseTestCase, self).setUp()
diff --git a/mayan/apps/documents/tests/test_views.py b/mayan/apps/documents/tests/test_views.py
index 37481ef752..e41ce15eb6 100644
--- a/mayan/apps/documents/tests/test_views.py
+++ b/mayan/apps/documents/tests/test_views.py
@@ -5,8 +5,6 @@ from __future__ import unicode_literals
 from django.contrib.contenttypes.models import ContentType
 from django.test import override_settings
 
-from django_downloadview import assert_download_response
-
 from common.tests.test_views import GenericViewTestCase
 from converter.models import Transformation
 from converter.permissions import permission_transformation_delete
@@ -208,7 +206,7 @@ class DocumentsViewsTestCase(GenericDocumentViewTestCase):
         self.assertEqual(response.status_code, 200)
 
         with self.document.open() as file_object:
-            assert_download_response(
+            self.assert_download_response(
                 self, response, content=file_object.read(),
                 basename=TEST_SMALL_DOCUMENT_FILENAME,
                 mime_type=self.document.file_mimetype
@@ -238,7 +236,7 @@ class DocumentsViewsTestCase(GenericDocumentViewTestCase):
         self.assertEqual(response.status_code, 200)
 
         with self.document.open() as file_object:
-            assert_download_response(
+            self.assert_download_response(
                 self, response, content=file_object.read(),
                 basename=TEST_SMALL_DOCUMENT_FILENAME,
                 mime_type=self.document.file_mimetype
@@ -268,7 +266,7 @@ class DocumentsViewsTestCase(GenericDocumentViewTestCase):
         self.assertEqual(response.status_code, 200)
 
         with self.document.open() as file_object:
-            assert_download_response(
+            self.assert_download_response(
                 self, response, content=file_object.read(),
                 basename='{} - {}'.format(
                     TEST_SMALL_DOCUMENT_FILENAME,