diff --git a/scripts/backup b/scripts/backup
index 77616ce..18f6094 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -24,11 +24,11 @@ ynh_print_info --message="Loading installation settings..."
 
 app=$YNH_APP_INSTANCE_NAME
 
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-data_path=$(ynh_app_setting_get --app=$app --key=data_path)
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)
+final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
+data_path=$(ynh_app_setting_get --app="$app" --key=data_path)
+domain=$(ynh_app_setting_get --app="$app" --key=domain)
+db_name=$(ynh_app_setting_get --app="$app" --key=db_name)
+phpversion=$(ynh_app_setting_get --app="$app" --key=phpversion)
 
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP