diff --git a/pyghmi/redfish/oem/lenovo/xcc.py b/pyghmi/redfish/oem/lenovo/xcc.py
index c88d2956..a9775060 100644
--- a/pyghmi/redfish/oem/lenovo/xcc.py
+++ b/pyghmi/redfish/oem/lenovo/xcc.py
@@ -16,6 +16,7 @@ import pyghmi.redfish.oem.generic as generic
 from pyghmi.util.parse import parse_time
 import errno
 import json
+improt math
 import socket
 import time
 import pyghmi.ipmi.private.util as util