diff --git a/install_orbit_environment.sh b/install_orbit_environment.sh
index e790fa0..00eeaca 100644
--- a/install_orbit_environment.sh
+++ b/install_orbit_environment.sh
@@ -16,14 +16,14 @@ wget http://gitlab.tp.rulingcom.com/erictyl/install_r45_on_ubuntu_1804lts_doc/-/
 bash install_nginx.sh
 sudo nginx -t
 nginx_status="$(echo $?)"
-if [ $nginx_status != 0 ]; then
+if [ $nginx_status != "0" ]; then
 	sudo sed -i 's/\([^#]include \/etc\/nginx\/sites-enabled\/*\)/\#\1/g' /etc/nginx/nginx.conf
 fi
 sudo service nginx restart
 cd /etc/nginx/
 sudo mkdir orbit_sites/
 if [ -z "$(grep 'orbit_sites' nginx.conf)" ]; then
-	sudo sed -i 's/\(include\ \/etc\/nginx\/sites-enabled\/\*\;\)/\1\n\tinclude\ \/etc\/nginx\/orbit_sites\/*;/g' nginx.conf
+	sudo sed -i 's/\(include\ \/etc\/nginx\/sites-enabled\/\*\;\)/\1\n    include\ \/etc\/nginx\/orbit_sites\/*;/g' nginx.conf
 fi
 cd $org_pwd
 sudo apt-get install gnupg -y