diff --git a/mayan/apps/documents/tests/__init__.py b/mayan/apps/documents/tests/__init__.py
index 57c2836216..c1f93fb9de 100644
--- a/mayan/apps/documents/tests/__init__.py
+++ b/mayan/apps/documents/tests/__init__.py
@@ -1,2 +1,3 @@
 from .base import GenericDocumentTestCase, GenericDocumentViewTestCase  # NOQA
 from .literals import *  # NOQA
+from .mixins import *  # NOQA
diff --git a/mayan/apps/documents/tests/mixins.py b/mayan/apps/documents/tests/mixins.py
index 13e51c08c0..e56b0d5577 100644
--- a/mayan/apps/documents/tests/mixins.py
+++ b/mayan/apps/documents/tests/mixins.py
@@ -8,6 +8,8 @@ from ..models import DocumentType
 
 from .literals import TEST_DOCUMENT_TYPE_LABEL, TEST_SMALL_DOCUMENT_FILENAME
 
+__all__ = ('DocumentTestMixin',)
+
 
 class DocumentTestMixin(object):
     auto_create_document_type = True