diff --git a/lib/nova b/lib/nova
index 5ff5099..6156834 100644
--- a/lib/nova
+++ b/lib/nova
@@ -377,6 +377,7 @@
     iniset $NOVA_CONF DEFAULT ec2_workers "4"
     iniset $NOVA_CONF DEFAULT metadata_workers "4"
     iniset $NOVA_CONF DEFAULT sql_connection `database_connection_url nova`
+    iniset $NOVA_CONF DEFAULT fatal_deprecations "True"
     iniset $NOVA_CONF DEFAULT instance_name_template "${INSTANCE_NAME_PREFIX}%08x"
     iniset $NOVA_CONF osapi_v3 enabled "True"