diff --git a/src/allmydata/test/test_crypto.py b/src/allmydata/test/test_crypto.py
index 7f6271ef3..498723cf4 100644
--- a/src/allmydata/test/test_crypto.py
+++ b/src/allmydata/test/test_crypto.py
@@ -9,7 +9,6 @@ if PY2:
 
 from future.utils import native_bytes
 
-import six
 import unittest
 
 from base64 import b64decode