diff --git a/tools/testing/tests/fido2.py b/tools/testing/tests/fido2.py
index 9c16eb8..7327d12 100644
--- a/tools/testing/tests/fido2.py
+++ b/tools/testing/tests/fido2.py
@@ -2,7 +2,6 @@ from __future__ import print_function, absolute_import, unicode_literals
 import time
 from random import randint
 import array
-import struct
 from functools import cmp_to_key
 
 from fido2 import cbor