diff --git a/bin/emqx.cmd b/bin/emqx.cmd
index 0c4741b95..55d28b4ca 100644
--- a/bin/emqx.cmd
+++ b/bin/emqx.cmd
@@ -64,8 +64,8 @@
 @set node_type=-name
 @set schema_mod=emqx_conf_schema
 :: no advanced DB backend for Windows
-@set EMQX_NODE__DB_BACKEND=mnesia

-@set EMQX_NODE__DB_ROLE=core
+@set EMQX_NODE__DB_BACKEND=mnesia
+@set EMQX_NODE__DB_ROLE=core
 
 @set conf_path="%etc_dir%\emqx.conf"