diff --git a/scripts/vm/hypervisor/xenserver/vmops b/scripts/vm/hypervisor/xenserver/vmops
index 915d436f117..8a3c0a40c6a 100755
--- a/scripts/vm/hypervisor/xenserver/vmops
+++ b/scripts/vm/hypervisor/xenserver/vmops
@@ -12,6 +12,7 @@ import socket
 import stat
 import tempfile
 import util
+from util import CommandException
 
 def echo(fn):
     def wrapped(*v, **k):