diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index af71066..9daf285 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -105,6 +105,11 @@
        iniset $TEMPEST_CONFIG policy-feature-enabled changed_nova_policies_ussuri False
     fi
 
+    if [[ ${DEVSTACK_SERIES} == 'train' ]]; then
+       # Remove this once stable/train becomes EOL.
+       iniset $TEMPEST_CONFIG policy-feature-enabled changed_nova_policies_ussuri False
+    fi
+
     iniset $TEMPEST_CONFIG patrole rbac_test_roles $RBAC_TEST_ROLES
 }