diff --git a/rbac/userperm.py b/rbac/userperm.py
index a717908..889a62e 100644
--- a/rbac/userperm.py
+++ b/rbac/userperm.py
@@ -1,5 +1,6 @@
 import time
 from sqlor.dbpools import DBPools
+from ahserver.serverenv import ServerEnv
 from appPublic.Singleton import SingletonDecorator
 
 class CacheUP: