diff --git a/nova/tests/fixtures.py b/nova/tests/fixtures.py
index 28f757adb3a5..207047133498 100644
--- a/nova/tests/fixtures.py
+++ b/nova/tests/fixtures.py
@@ -762,6 +762,10 @@ class WarningsFixture(fixtures.Fixture):
         # about any deprecations coming from it
         warnings.filterwarnings('ignore',
             module='mox3.mox')
+        # NOTE(mriedem): Ignore scope check UserWarnings from oslo.policy.
+        warnings.filterwarnings('ignore',
+                                message="Policy .* failed scope check",
+                                category=UserWarning)
 
         self.addCleanup(warnings.resetwarnings)
 
diff --git a/nova/tests/functional/api/openstack/placement/fixtures/gabbits.py b/nova/tests/functional/api/openstack/placement/fixtures/gabbits.py
index 5d3a4194d222..b57bdefc33b3 100644
--- a/nova/tests/functional/api/openstack/placement/fixtures/gabbits.py
+++ b/nova/tests/functional/api/openstack/placement/fixtures/gabbits.py
@@ -53,6 +53,9 @@ class APIFixture(fixture.GabbiFixture):
         self.standard_logging_fixture.setUp()
         self.output_stream_fixture = fixtures.OutputStreamCapture()
         self.output_stream_fixture.setUp()
+        # Filter ignorable warnings during test runs.
+        self.warnings_fixture = fixtures.WarningsFixture()
+        self.warnings_fixture.setUp()
 
         self.conf = CONF
         self.conf.set_override('auth_strategy', 'noauth2', group='api')
@@ -110,6 +113,7 @@ class APIFixture(fixture.GabbiFixture):
         # are flushed.
         self._reset_db_flags()
 
+        self.warnings_fixture.cleanUp()
         self.output_stream_fixture.cleanUp()
         self.standard_logging_fixture.cleanUp()
         if self.conf: