---
title: "Breaking: #73514 - TypoScript property \"includeLibs\" removed"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-73514"
source: "Changelog/8.0/Breaking-73514-TypoScriptPropertyIncludeLibsRemoved.rst"
typo3-version: "8.0"
typo3-major: 8
type: "breaking"
issue: 73514
forge: "https://forge.typo3.org/issues/73514"
tags: ["PHP-API", "TypoScript"]
rendered: "2026-09-17T21:17:42+00:00"
---

# Breaking: #73514 - TypoScript property "includeLibs" removed {#breaking-73514-typoscript-property-includelibs-removed}

See [forge#73514](https://forge.typo3.org/issues/73514)

## Description {#description}

The TypoScript property to load additional PHP libraries via `.includeLibs` has been removed from the Content
Objects `COA/COA_INT` and `USER/USER_INT`.

## Impact {#impact}

Setting the `.includeLibs` property will have no effect anymore.

## Affected Installations {#affected-installations}

Any installation using a very old pi_based extension that does not ship proper class naming or autoloading
information.

## Migration {#migration}

Make sure everything that was previously loaded via includeLibs is now encapsulated in proper PHP classes,
which is referenced by USER/USER_INT when needed.