diff --git a/blockstack/blockstackd.py b/blockstack/blockstackd.py
index c5abe7cfa..d7e4adb8c 100644
--- a/blockstack/blockstackd.py
+++ b/blockstack/blockstackd.py
@@ -41,6 +41,7 @@ import binascii
 import copy
 import atexit
 import threading
+import errno
 
 from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler