diff --git a/src/spikeinterface/preprocessing/filter.py b/src/spikeinterface/preprocessing/filter.py
index 793c8ec7d1..bd7d86a76b 100644
--- a/src/spikeinterface/preprocessing/filter.py
+++ b/src/spikeinterface/preprocessing/filter.py
@@ -327,8 +327,6 @@ def __init__(self, recording, freq=3000, q=30, margin_ms=5.0, dtype=None):
         self._kwargs = dict(recording=recording, freq=freq, q=q, margin_ms=margin_ms, dtype=dtype.str)
 
 
-
-
 # functions for API
 filter = define_function_from_class(source_class=FilterRecording, name="filter")
 bandpass_filter = define_function_from_class(source_class=BandpassFilterRecording, name="bandpass_filter")