diff --git a/plugins/openresty/index.py b/plugins/openresty/index.py
index 4cd3e6a69..960d117ab 100755
--- a/plugins/openresty/index.py
+++ b/plugins/openresty/index.py
@@ -209,7 +209,7 @@ def confReplace():
     # copy resty lib
     src_resty_dir = getPluginDir()+'/resty'
     dst_resty_dir = getServerDir()+'/lualib/resty'
-    mw.execShell('cp -rf  ' src_resty_dir + '' + dst_resty_dir)
+    mw.execShell('cp -rf  ' + src_resty_dir + '' + dst_resty_dir)
 
 
 def initDreplace():