diff --git a/tests/data/_IsmrmrdRawTestData.py b/tests/data/_IsmrmrdRawTestData.py
index 0ba8fa2d..efeff6ed 100644
--- a/tests/data/_IsmrmrdRawTestData.py
+++ b/tests/data/_IsmrmrdRawTestData.py
@@ -9,6 +9,7 @@
 from einops import repeat
 from mrpro.data import SpatialDimension
 from mrpro.phantoms import EllipsePhantom
+
 from tests import RandomGenerator
 
 ISMRMRD_TRAJECTORY_TYPE = (
diff --git a/tests/utils/test_split_idx.py b/tests/utils/test_split_idx.py
index 1cd206b8..30501b9a 100644
--- a/tests/utils/test_split_idx.py
+++ b/tests/utils/test_split_idx.py
@@ -4,6 +4,7 @@
 import torch
 from einops import repeat
 from mrpro.utils import split_idx
+
 from tests import RandomGenerator