diff --git a/bitshares/memo.py b/bitshares/memo.py
index cdc751fe..469b1ec4 100644
--- a/bitshares/memo.py
+++ b/bitshares/memo.py
@@ -3,7 +3,7 @@
 from bitsharesbase import memo as BtsMemo
 from bitsharesbase.account import PrivateKey, PublicKey
 from .account import Account
-from .exceptions import MissingKeyError
+from .exceptions import MissingKeyError, KeyNotFound
 
 
 class Memo(object):