diff --git a/python/adeunisrf.py b/python/adeunisrf.py
index bc97962..0103c53 100644
--- a/python/adeunisrf.py
+++ b/python/adeunisrf.py
@@ -7,6 +7,7 @@
 
 
 
+import base64
 import binascii
 import lorautil
 import logging