pep8
diff --git a/tests/hazmat/primitives/utils.py b/tests/hazmat/primitives/utils.py
index cfc885b..758e755 100644
--- a/tests/hazmat/primitives/utils.py
+++ b/tests/hazmat/primitives/utils.py
@@ -3,7 +3,6 @@
 
 import pytest
 
-from cryptography.hazmat.bindings import _ALL_BACKENDS
 from cryptography.hazmat.primitives import hashes, hmac
 from cryptography.hazmat.primitives.ciphers import Cipher
 from cryptography.exceptions import (
@@ -21,6 +20,7 @@
         )
     return all_params
 
+
 def generate_encrypt_test(param_loader, path, file_names, cipher_factory,
                           mode_factory, only_if=lambda backend: True,
                           skip_message=None):