diff --git a/neutron/services/auto_allocate/db.py b/neutron/services/auto_allocate/db.py
index c51777f1473..1d6d77519e8 100644
--- a/neutron/services/auto_allocate/db.py
+++ b/neutron/services/auto_allocate/db.py
@@ -194,7 +194,9 @@ class AutoAllocatedTopologyMixin(object):
         except n_exc.NotFound:
             raise exceptions.AutoAllocationFailure(
                 reason=_("No default subnetpools defined"))
-        return {'id': 'dry-run=pass', 'tenant_id': tenant_id}
+        return {'id': 'dry-run=pass',
+                'tenant_id': tenant_id,
+                'project_id': tenant_id}
 
     def _validate(self, context, tenant_id):
         """Validate and return the tenant to be associated to the topology."""
diff --git a/neutron/tests/unit/services/auto_allocate/test_db.py b/neutron/tests/unit/services/auto_allocate/test_db.py
index 83167d7ee62..2ff3cf7955a 100644
--- a/neutron/tests/unit/services/auto_allocate/test_db.py
+++ b/neutron/tests/unit/services/auto_allocate/test_db.py
@@ -351,7 +351,10 @@ class AutoAllocateTestCase(testlib_api.SqlTestCase):
             mock.patch.object(
                 self.mixin, '_get_supported_subnetpools'):
             result = self.mixin._check_requirements(self.ctx, 'foo_tenant')
-            expected = {'id': 'dry-run=pass', 'tenant_id': 'foo_tenant'}
+            expected = {
+                'id': 'dry-run=pass',
+                'tenant_id': 'foo_tenant',
+                'project_id': 'foo_tenant'}
             self.assertEqual(expected, result)
 
     def test__cleanup_handles_failures(self):