diff --git a/src/spikeinterface/preprocessing/tests/test_zero_padding.py b/src/spikeinterface/preprocessing/tests/test_zero_padding.py
index f42d860334..5c2c00f9ca 100644
--- a/src/spikeinterface/preprocessing/tests/test_zero_padding.py
+++ b/src/spikeinterface/preprocessing/tests/test_zero_padding.py
@@ -260,7 +260,9 @@ def test_trace_padded_recording_retrieve_traces_with_partial_padding(recording,
 
 @pytest.mark.parametrize("preprocessing", ["bandpass_filter", "phase_shift"])
 @pytest.mark.parametrize("padding_start, padding_end", [(5000, 5000), (5000, 0), (0, 5000)])
-def test_trace_padded_recording_retrieve_full_recording_with_preprocessing(recording, padding_start, padding_end, preprocessing):
+def test_trace_padded_recording_retrieve_full_recording_with_preprocessing(
+    recording, padding_start, padding_end, preprocessing
+):
     num_samples = recording.get_num_samples()
     num_channels = recording.get_num_channels()
 
@@ -301,8 +303,5 @@ def test_trace_padded_recording_retrieve_full_recording_with_preprocessing(recor
             assert np.all(padded_trace == padded_recording.fill_value)
 
 
-
-
-
 if __name__ == "__main__":
     test_zero_padding_channel()