diff --git a/tests/test_utils_hastepics.py b/tests/test_utils_hastepics.py
index ea46f89f9..a105d79f9 100644
--- a/tests/test_utils_hastepics.py
+++ b/tests/test_utils_hastepics.py
@@ -2,6 +2,7 @@ import time
 import threading
 import pytest
 import epics
+import os
 from epics.pv import PV
 from epics.pv import _PVcache_
 from slic.utils.hastyepics import *