diff --git a/scripts/upgrade b/scripts/upgrade
index 4547608..b6c6395 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -3,6 +3,8 @@
 # Exit on command errors and treat unset variables as an error
 set -eu
 
+source .functions
+
 # See comments in install script
 app=$YNH_APP_INSTANCE_NAME
 
@@ -16,8 +18,8 @@ admin=$(ynh_app_setting_get "$app" admin)
 is_public=$(ynh_app_setting_get "$app" is_public)
 language=$(ynh_app_setting_get "$app" language)
 
-# Remove trailing "/" for next commands
-path=${path%/}
+# Check path and correct if required
+CHECK_PATH
 
 # Copy source files
 src_path=/var/www/$app
@@ -29,9 +31,17 @@ sudo cp -a ../sources/. $src_path
 sudo chown -R root: $src_path
 
 # Modify Nginx configuration file and copy it to Nginx conf directory
+### Nginx ###
+if [ $path = "/" ]; then
+nginx_conf=../conf/nginx_root.conf
+else
 nginx_conf=../conf/nginx.conf
+fi
 sed -i "s@YNH_WWW_PATH@$path@g" $nginx_conf
-sed -i "s@YNH_WWW_ALIAS@$src_path/@g" $nginx_conf
+sed -i "s@YNH_WWW_ALIAS@$app/@g" $nginx_conf
+sed -i "s@YNH_WWW_APP@$app@g" $nginx_conf
+sudo cp $nginx_conf /etc/nginx/conf.d/$domain.d/$app.conf
+
 # If a dedicated php-fpm process is used:
 #
 sed -i "s@YNH_WWW_APP@$app@g" $nginx_conf