diff --git a/xo_install.sh b/xo_install.sh
index 0957f71..ced5504 100644
--- a/xo_install.sh
+++ b/xo_install.sh
@@ -3,15 +3,15 @@ cd /opt
 curl -sL https://deb.nodesource.com/setup_5.x | sudo -E bash -
 sudo apt-get install --yes nodejs
 curl -o /usr/local/bin/n https://raw.githubusercontent.com/visionmedia/n/master/bin/n
-chmod +x /usr/local/bin/n
-n stable
+sudo chmod +x /usr/local/bin/n
+sudo n stable
 sudo apt-get install --yes build-essential redis-server libpng12-dev git python-minimal
 git clone -b stable https://github.com/vatesfr/xo-server
 git clone -b stable https://github.com/vatesfr/xo-web
 cd xo-server
 sudo npm install && npm run build
-cp sample.config.yaml .xo-server.yaml
-sed -i /mounts/a\\"    '/': '/opt/xo-web/dist'" .xo-server.yaml
+sudo cp sample.config.yaml .xo-server.yaml
+sudo sed -i /mounts/a\\"    '/': '/opt/xo-web/dist'" .xo-server.yaml
 cd /opt/xo-web
 sudo npm i lodash.trim@3.0.1
 sudo npm install