diff --git a/tools/testing/tests/tester.py b/tools/testing/tests/tester.py
index 6b0df00..99f26f6 100644
--- a/tools/testing/tests/tester.py
+++ b/tools/testing/tests/tester.py
@@ -69,6 +69,7 @@ class Tester:
         if not dev:
             try:
                 from fido2.pcsc import CtapPcscDevice
+
                 print("--- NFC ---")
                 print(list(CtapPcscDevice.list_devices()))
                 dev = next(CtapPcscDevice.list_devices(), None)