diff --git a/oslo_messaging/conffixture.py b/oslo_messaging/conffixture.py
index 94f2f8977..2f75e9a07 100644
--- a/oslo_messaging/conffixture.py
+++ b/oslo_messaging/conffixture.py
@@ -37,7 +37,7 @@ class ConfFixture(fixtures.Fixture):
     An example usage::
 
         self.messaging_conf = self.useFixture(messaging.ConfFixture(cfg.CONF))
-        self.messaging_conf.transport_url = 'fake://'
+        self.messaging_conf.transport_url = 'fake:/'
 
     :param conf: a ConfigOpts instance
     :type conf: oslo.config.cfg.ConfigOpts
diff --git a/oslo_messaging/tests/test_transport.py b/oslo_messaging/tests/test_transport.py
index c37f352b4..6e320645d 100755
--- a/oslo_messaging/tests/test_transport.py
+++ b/oslo_messaging/tests/test_transport.py
@@ -354,10 +354,13 @@ class TestTransportUrlCustomisation(test_utils.BaseTestCase):
         def transport_url_parse(url):
             return transport.TransportURL.parse(self.conf, url)
 
-        self.url1 = transport_url_parse("fake://vhost1?x=1&y=2&z=3")
-        self.url2 = transport_url_parse("fake://vhost2?foo=bar")
-        self.url3 = transport_url_parse("fake://vhost1?l=1&l=2&l=3")
-        self.url4 = transport_url_parse("fake://vhost2?d=x:1&d=y:2&d=z:3")
+        self.url1 = transport_url_parse(
+            "fake:/vhost1/localhost:5672/?x=1&y=2&z=3")
+        self.url2 = transport_url_parse("fake:/vhost2/localhost:5672/?foo=bar")
+        self.url3 = transport_url_parse(
+            "fake:/vhost1/localhost:5672/?l=1&l=2&l=3")
+        self.url4 = transport_url_parse(
+            "fake:/vhost2/localhost:5672/?d=x:1&d=y:2&d=z:3")
         self.url5 = transport_url_parse("fake://noport:/?")
 
     def test_hash(self):