diff --git a/nova/policies/cells_scheduler.py b/nova/policies/cells_scheduler.py
index e3ad2e701b..bc0020c558 100644
--- a/nova/policies/cells_scheduler.py
+++ b/nova/policies/cells_scheduler.py
@@ -13,19 +13,29 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from oslo_policy import policy
+from nova.policies import base
 
 
 POLICY_ROOT = 'cells_scheduler_filter:%s'
 
 
 cells_scheduler_policies = [
-    policy.RuleDefault(
-        name=POLICY_ROOT % 'DifferentCellFilter',
-        check_str='is_admin:True'),
-    policy.RuleDefault(
-        name=POLICY_ROOT % 'TargetCellFilter',
-        check_str='is_admin:True'),
+    base.create_rule_default(
+        POLICY_ROOT % 'DifferentCellFilter',
+        'is_admin:True',
+        """Different cell filter to route a build away from a particular cell
+
+This policy is read by nova-scheduler process.
+""",
+        []),
+    base.create_rule_default(
+        POLICY_ROOT % 'TargetCellFilter',
+        'is_admin:True',
+        """Target cell filter to route a build to a particular cell
+
+This policy is read by nova-scheduler process.
+""",
+        [])
 ]