diff --git a/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py b/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py
index 4ac850e4ee..9d841a5196 100644
--- a/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py
+++ b/trezorlib/tests/device_tests/test_msg_stellar_sign_transaction.py
@@ -152,9 +152,7 @@ class TestMsgStellarSignTransaction(TrezorTest):
         op.destination_account = (
             "GBOVKZBEM2YYLOCDCUXJ4IMRKHN4LCJAE7WEAEA2KF562XFAGDBOB64V"
         )
-        op.asset = proto.StellarAssetType(
-            0
-        )
+        op.asset = proto.StellarAssetType(0)
 
         tx = self._create_msg()