diff --git a/src/allmydata/introducer.py b/src/allmydata/introducer.py
index 6fbc9c94f..a90b2caf4 100644
--- a/src/allmydata/introducer.py
+++ b/src/allmydata/introducer.py
@@ -3,7 +3,7 @@ import re
 from base64 import b32encode, b32decode
 from zope.interface import implements
 from twisted.application import service
-from twisted.python import log
+from twisted.python import defer, log
 from foolscap import Referenceable
 from allmydata import node
 from allmydata.interfaces import RIIntroducer, RIIntroducerClient