diff --git a/etc/nova/nova-config-generator.conf b/etc/nova/nova-config-generator.conf
index 76413128dc43..ad2be609139f 100644
--- a/etc/nova/nova-config-generator.conf
+++ b/etc/nova/nova-config-generator.conf
@@ -1,6 +1,7 @@
 [DEFAULT]
 output_file = etc/nova/nova.conf.sample
 wrap_width = 80
+summarize = true
 namespace = nova.conf
 namespace = oslo.log
 namespace = oslo.messaging