diff --git a/tests/test_end_to_end.py b/tests/test_end_to_end.py
index 5b3ed8b9a5fd0b776ac5b987c3a7c5003a9194d3..dcbc3d14edda54b666c38d26aef3438fec310a6a 100644
--- a/tests/test_end_to_end.py
+++ b/tests/test_end_to_end.py
@@ -29,9 +29,10 @@ def test_id():
 def test_amount():
     """tests 'silkaj amount' command on gtest"""
 
-    output = check_output(["silkaj", "--gtest", "balance", "3dnbnYY9i2bHMQUGyFp5GVvJ2wBkVpus31cDJA5cfRpj"]).decode()
+    output = check_output(
+        ["silkaj", "--gtest", "balance", "3dnbnYY9i2bHMQUGyFp5GVvJ2wBkVpus31cDJA5cfRpj"]
+    ).decode()
     assert "Total amount of: 3dnbnYY9i2bHMQUGyFp5GVvJ2wBkVpus31cDJA5cfRpj" in output
     assert "Total Relative     =" in output
     assert "UD ÄžTest" in output
     assert "Total Quantitative =" in output
-
diff --git a/tests/test_unit_tx.py b/tests/test_unit_tx.py
index f2e6375d8142cfd67ca52fd9a4cad8b8537393f2..b1300203181175e46b4940fca8a26b231d580c90 100644
--- a/tests/test_unit_tx.py
+++ b/tests/test_unit_tx.py
@@ -3,12 +3,9 @@ import pytest
 from silkaj.tx import truncBase
 
 
-@pytest.mark.parametrize('amount,base,expected', [
-        (0, 0, 0),
-        (10, 2, 0),
-        (100, 2, 100),
-        (306, 2, 300),
-        (3060, 3, 3000),
-])
+@pytest.mark.parametrize(
+    "amount,base,expected",
+    [(0, 0, 0), (10, 2, 0), (100, 2, 100), (306, 2, 300), (3060, 3, 3000)],
+)
 def test_truncBase(amount, base, expected):
     assert truncBase(amount, base) == expected