diff --git a/docs/m3db-install.md b/docs/m3db-install.md
index c1f5810f..515e5f39 100644
--- a/docs/m3db-install.md
+++ b/docs/m3db-install.md
@@ -10,9 +10,10 @@
 # 填写etcd的机器列表
 
 # 生成证书
-./etcd/certs/reinit-root-ca.sh
-./etcd/certs/update-etcd-client-certs.sh
-./etcd/certs/update-etcd-server-certs.sh
+cd etcd/certs
+./reinit-root-ca.sh
+./update-etcd-client-certs.sh
+./update-etcd-server-certs.sh
 ```