diff --git a/poky/bitbake/lib/hashserv/tests.py b/poky/bitbake/lib/hashserv/tests.py
index 6e86295..b34c436 100644
--- a/poky/bitbake/lib/hashserv/tests.py
+++ b/poky/bitbake/lib/hashserv/tests.py
@@ -9,6 +9,7 @@
 import hashlib
 import logging
 import multiprocessing
+import os
 import sys
 import tempfile
 import threading