diff --git a/ibllib/io/extractors/mesoscope.py b/ibllib/io/extractors/mesoscope.py
index 299c6fca9..20b349eb0 100644
--- a/ibllib/io/extractors/mesoscope.py
+++ b/ibllib/io/extractors/mesoscope.py
@@ -7,7 +7,6 @@
 from one.util import ensure_list
 from one.alf.files import session_path_parts
 import matplotlib.pyplot as plt
-from neurodsp.utils import falls
 from packaging import version
 
 from ibllib.plots.misc import squares, vertical_lines