diff --git a/composer.json b/composer.json
index e8d4f512..d88c7db2 100644
--- a/composer.json
+++ b/composer.json
@@ -103,7 +103,6 @@
 			"dev-main": "3.0.x-dev"
 		},
 		"typo3/cms": {
-			"app-dir": ".Build",
 			"extension-key": "tea",
 			"web-dir": ".Build/Web"
 		}