---
title: "Breaking: #61959 - Move flash message output to alerts"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-61959"
source: "Changelog/7.0/Breaking-61959-FlashMessageClasses.rst"
modified: "2026-09-14T09:47:36+00:00"
---

# Breaking: #61959 - Move flash message output to alerts

See [forge#61959](https://forge.typo3.org/issues/61959)

## Description

Flash messages are now styled by using the native CSS classes of Twitter Bootstrap. The changed classes are:

-   "typo3-message message-notice" => "alert alert-notice"
-   "typo3-message message-information" => "alert alert-info"
-   "typo3-message message-ok" => "alert alert-success"
-   "typo3-message message-warning" => "alert alert-warning"
-   "typo3-message message-error" => "alert alert-danger"

## Impact

Extensions which use the old classes like "typo3-message message-information" rely on deprecated CSS classes
which might lead to non styled output.

## Affected installations

Any installation that uses the HTML of flash messages without calling the API.

## Migration

Change the used CSS classes to the new ones.