diff --git a/src/spikeinterface/preprocessing/remove_artifacts.py b/src/spikeinterface/preprocessing/remove_artifacts.py
index 7e84822c61..8e72b96c6d 100644
--- a/src/spikeinterface/preprocessing/remove_artifacts.py
+++ b/src/spikeinterface/preprocessing/remove_artifacts.py
@@ -1,4 +1,5 @@
 import numpy as np
+import scipy
 
 from spikeinterface.core.core_tools import define_function_from_class