diff --git a/neutron/tests/unit/midonet/test_midonet_lib.py b/neutron/tests/unit/midonet/test_midonet_lib.py
index 1dd6b3a0e3..1774657f72 100644
--- a/neutron/tests/unit/midonet/test_midonet_lib.py
+++ b/neutron/tests/unit/midonet/test_midonet_lib.py
@@ -20,6 +20,8 @@
 # @author: Tomoe Sugihara, Midokura Japan KK
 
 import mock
+import sys
+sys.modules["midonetclient"] = mock.Mock()
 import testtools
 import webob.exc as w_exc