diff --git a/src/osmo_gsm_tester/core/log.py b/src/osmo_gsm_tester/core/log.py
index a573f05..f7c210a 100644
--- a/src/osmo_gsm_tester/core/log.py
+++ b/src/osmo_gsm_tester/core/log.py
@@ -22,6 +22,7 @@
 import time
 import traceback
 import atexit
+import re
 from datetime import datetime # we need this for strftime as the one from time doesn't carry microsecond info
 from inspect import getframeinfo, stack