diff --git a/service/bootstrap.lua b/service/bootstrap.lua
index 02d19dd0..9d762f1c 100644
--- a/service/bootstrap.lua
+++ b/service/bootstrap.lua
@@ -1,7 +1,5 @@
-local skynet = require "skynet"
-local harbor = require "skynet.harbor"
 local service = require "skynet.service"
-require "skynet.manager"	-- import skynet.launch, ...
+local skynet = require "skynet.manager"	-- import skynet.launch, ...
 
 skynet.start(function()
 	local standalone = skynet.getenv "standalone"