diff --git a/neutron/tests/base.py b/neutron/tests/base.py
index a135010d15..9a0e890865 100644
--- a/neutron/tests/base.py
+++ b/neutron/tests/base.py
@@ -105,6 +105,9 @@ class BaseTestCase(testtools.TestCase):
         self.useFixture(fixtures.NestedTempfile())
         self.useFixture(fixtures.TempHomeDir())
 
+        self.temp_dir = self.useFixture(fixtures.TempDir()).path
+        cfg.CONF.set_override('state_path', self.temp_dir)
+
         self.addCleanup(mock.patch.stopall)
         self.addCleanup(CONF.reset)