diff --git a/tests/test_file.py b/tests/test_file.py
index c830f1e8f66327055b0e03acb937ada09569941a..083d75b75292e5bc1c8f034e429c49fe7b01f2d4 100644
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -35,8 +35,6 @@ from sys import maxsize as maxint
 
 from lxml import etree
 from pytest import raises, mark
-from nose.tools import (assert_equal, assert_false, assert_is_not_none,
-                        assert_true)
 from caosdb import execute_query, get_config, get_connection
 from caosdb.common import models
 from caosdb.exceptions import EntityError, TransactionError