diff --git a/scripts/restore b/scripts/restore
index 2b7f8a3..94a4623 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -34,6 +34,9 @@ app_id=$(ynh_app_setting_get --app=$app --key=app_id)
 #=================================================
 ynh_script_progression --message="Validating restoration parameters..." --weight=1
 
+test -e "/var/www/$YNH_APP_ARG_APP_ID/icecoder" || ynh_die --message="You have already restored a app instance here before restore this app instance!"
+test -e "/var/www/$YNH_APP_ARG_APP_ID" || ynh_die --message="You don't have installed a webapp before restore this app!"
+
 ynh_webpath_available --domain=$domain --path_url=$path_url \
 	|| ynh_die --message="Path not available: ${domain}${path_url}"
 test ! -d $final_path \