diff --git a/lofar_station_client/statistics/writer/hdf5.py b/lofar_station_client/statistics/writer/hdf5.py
index 471a66b0336d20150a2a88d5dc9e1d6fb72d4e0e..7fd048fb91d3df6d922c977ca630d17bb812873e 100644
--- a/lofar_station_client/statistics/writer/hdf5.py
+++ b/lofar_station_client/statistics/writer/hdf5.py
@@ -8,7 +8,6 @@
 # pylint: disable=R0902,R0913,W0703,W1404,C0301
 
 import logging
-import os
 from abc import ABC, abstractmethod
 from datetime import datetime, timedelta
 from itertools import chain