diff --git a/scripts/backup b/scripts/backup
index b08462b..cfe6c8c 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -23,7 +23,7 @@ app=$YNH_APP_INSTANCE_NAME
 source /usr/share/yunohost/helpers
 
 # Retrieve arguments
-domain=$(sudo yunohost app setting $app domain)
+domain=$(sudo ynh_app_setting_set $app domain)
 
 # Backup directory location for the app from where the script is executed and 
 # which will be compressed afterward