diff --git a/lualib/snax/interface.lua b/lualib/snax/interface.lua
index 07c1b728..5a403cfd 100644
--- a/lualib/snax/interface.lua
+++ b/lualib/snax/interface.lua
@@ -1,24 +1,23 @@
 local skynet = require "skynet"
 
 local function dft_loader(path, name, G)
-    local errlist = {}
+	local errlist = {}
 
-    for pat in string.gmatch(path,"[^;]+") do
-        local filename = string.gsub(pat, "?", name)
-        local f , err = loadfile(filename, "bt", G)
-        if f then
-            return f, pat
-        else
-            table.insert(errlist, err)
-        end
-    end
+	for pat in string.gmatch(path,"[^;]+") do
+		local filename = string.gsub(pat, "?", name)
+		local f , err = loadfile(filename, "bt", G)
+		if f then
+			return f, pat
+		else
+			table.insert(errlist, err)
+		end
+	end
 
-    error(table.concat(errlist, "\n"))
+	error(table.concat(errlist, "\n"))
 end
 
 return function (name , G, loader)
-       loader = loader or dft_loader
-       local mainfunc
+	loader = loader or dft_loader
 
 	local function func_id(id, group)
 		local tmp = {}
@@ -42,7 +41,6 @@ return function (name , G, loader)
 		assert(getmetatable(G) == nil)
 		assert(G.init == nil)
 		assert(G.exit == nil)
-
 		assert(G.accept == nil)
 		assert(G.response == nil)
 	end
@@ -75,10 +73,8 @@ return function (name , G, loader)
 		end
 	end
 
-	local pattern
-
-        local path = assert(skynet.getenv "snax" , "please set snax in config file")
-        mainfunc, pattern = loader(path, name, G)
+	local path = assert(skynet.getenv "snax" , "please set snax in config file")
+	local mainfunc, pattern = loader(path, name, G)
 
 	setmetatable(G,	{ __index = env , __newindex = init_system })
 	local ok, err = xpcall(mainfunc, debug.traceback)