diff --git a/ShadowsocksX-NG/install_helper.sh b/ShadowsocksX-NG/install_helper.sh
index fe34eba..606fe6d 100755
--- a/ShadowsocksX-NG/install_helper.sh
+++ b/ShadowsocksX-NG/install_helper.sh
@@ -9,6 +9,6 @@ cd `dirname "${BASH_SOURCE[0]}"`
 sudo mkdir -p "/Library/Application Support/ShadowsocksX-NG/"
 sudo cp proxy_conf_helper "/Library/Application Support/ShadowsocksX-NG/"
 sudo chown root:admin "/Library/Application Support/ShadowsocksX-NG/proxy_conf_helper"
-sudo chmod +s "/Library/Application Support/ShadowsocksX-NG/proxy_conf_helper"
+sudo chmod a+rx "/Library/Application Support/ShadowsocksX-NG/proxy_conf_helper"
 
-echo done
\ No newline at end of file
+echo done