diff --git a/src/spikeinterface/sortingcomponents/matching/naive.py b/src/spikeinterface/sortingcomponents/matching/naive.py
index 4b04462e45..9482d50f9a 100644
--- a/src/spikeinterface/sortingcomponents/matching/naive.py
+++ b/src/spikeinterface/sortingcomponents/matching/naive.py
@@ -1,10 +1,8 @@
 """Sorting components: template matching."""
 
 import numpy as np
-from spikeinterface.core import WaveformExtractor
+from spikeinterface.core import WaveformExtractor, get_template_channel_sparsity, get_template_extremum_channel
 from spikeinterface.core import get_noise_levels, get_channel_distances, get_chunk_with_margin, get_random_data_chunks
-from spikeinterface.postprocessing import get_template_channel_sparsity, get_template_extremum_channel
-
 from spikeinterface.sortingcomponents.peak_detection import DetectPeakLocallyExclusive
 
 spike_dtype = [