diff --git a/mayan/apps/documents/tests/mixins.py b/mayan/apps/documents/tests/mixins.py
index dc4028a910..7c314aaf17 100644
--- a/mayan/apps/documents/tests/mixins.py
+++ b/mayan/apps/documents/tests/mixins.py
@@ -49,7 +49,6 @@ class DocumentTestMixin(object):
         self.test_document_type = DocumentType.objects.create(
             label=TEST_DOCUMENT_TYPE_LABEL
         )
-        self.test_document_type = self.test_document_type
 
     def _calculate_test_document_path(self):
         if not self.test_document_path: