diff --git a/openstack_releases/cmds/validate.py b/openstack_releases/cmds/validate.py
index 1d18d4db55..2950387067 100644
--- a/openstack_releases/cmds/validate.py
+++ b/openstack_releases/cmds/validate.py
@@ -793,9 +793,7 @@ def validate_new_releases(deliverable_info, deliverable_name,
     repository_settings = deliverable_info.get('repository-settings', {})
     for repo in actual_repos:
         if repo not in repository_settings:
-            # TODO(dhellmann): Turn this into a warning after the T
-            # series is open.
-            mk_warning(
+            mk_error(
                 'release %s includes repository %s '
                 'that is not in the repository-settings section' %
                 (final_release['version'], repo)
diff --git a/openstack_releases/tests/test_validate.py b/openstack_releases/tests/test_validate.py
index 1cf7e19f8e..51975ae067 100644
--- a/openstack_releases/tests/test_validate.py
+++ b/openstack_releases/tests/test_validate.py
@@ -1340,8 +1340,8 @@ class TestValidateNewReleases(base.BaseTestCase):
             errors.append,
         )
         print(warnings, errors)
-        self.assertEqual(1, len(warnings))
-        self.assertEqual(0, len(errors))
+        self.assertEqual(0, len(warnings))
+        self.assertEqual(1, len(errors))
 
     def test_missing_repo_info(self):
         # The tag is missing a repository that is in