diff --git a/nova/db/sqlalchemy/api.py b/nova/db/sqlalchemy/api.py
index 9d8807489..c4bff8308 100644
--- a/nova/db/sqlalchemy/api.py
+++ b/nova/db/sqlalchemy/api.py
@@ -19,7 +19,6 @@
 Implementation of SQLAlchemy backend.
 """
 import re
-import types
 import warnings
 
 from nova import block_device