diff --git a/SAS/TMSS/test/t_tmss_session_auth.py b/SAS/TMSS/test/t_tmss_session_auth.py
index 89184fadc843be27e7a11923934f08129c1ba16b..644f517c05dfa8426dfcaa7eccbf2b8b000bb541 100755
--- a/SAS/TMSS/test/t_tmss_session_auth.py
+++ b/SAS/TMSS/test/t_tmss_session_auth.py
@@ -23,6 +23,7 @@
 # The other functional tests use
 
 from datetime import datetime
+import os
 import unittest
 import logging
 logger = logging.getLogger(__name__)