diff --git a/scripts/upgrade b/scripts/upgrade
old mode 100644
new mode 100755
index 51ea551..4436143
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -15,11 +15,11 @@ set -e
 # db names, ...
 app=$YNH_APP_INSTANCE_NAME
 
-# Retrieve arguments
-domain=$YNH_APP_ARG_DOMAIN
-path=$YNH_APP_ARG_PATH
-admin=$YNH_APP_ARG_ADMIN
-is_public=$YNH_APP_ARG_IS_PUBLIC
+# Retrieve app settings
+domain=$(sudo yunohost app setting $app domain)
+path=$(sudo yunohost app setting $app path)
+admin=$(sudo yunohost app setting $app admin)
+is_public=$(sudo yunohost app setting $app is_public)
 
 # Remove trailing slash to path
 path=${path%/}