diff --git a/ipalib/plugins/host.py b/ipalib/plugins/host.py
index 9d7748350..ec367b8e1 100644
--- a/ipalib/plugins/host.py
+++ b/ipalib/plugins/host.py
@@ -47,6 +47,7 @@ from ipapython.ipautil import ipa_generate_password, CheckedIPAddress
 from ipapython.dnsutil import DNSName
 from ipapython.ssh import SSHPublicKey
 from ipapython.dn import DN
+from functools import reduce
 
 __doc__ = _("""
 Hosts/Machines