diff --git a/etc/emq.conf b/etc/emq.conf
index cf33692db..0dac74c77 100644
--- a/etc/emq.conf
+++ b/etc/emq.conf
@@ -11,7 +11,7 @@
 cluster.name = emqcl
 
 ## Cluster discovery strategy: manual | static | mcast | dns | etcd | k8s
-cluster.discovery = etcd
+cluster.discovery = mcast
 
 ## Cluster Autoheal: on | off
 cluster.autoheal = on