diff --git a/typo3/sysext/core/Classes/Package/PackageManager.php b/typo3/sysext/core/Classes/Package/PackageManager.php
index 8ec3ea8..3f113f8 100644
--- a/typo3/sysext/core/Classes/Package/PackageManager.php
+++ b/typo3/sysext/core/Classes/Package/PackageManager.php
@@ -445,6 +445,10 @@ class PackageManager extends \TYPO3\Flow\Package\PackageManager implements \TYPO
 		try {
 			return parent::getPackageKeyFromComposerName($composerName);
 		} catch (\TYPO3\Flow\Package\Exception\InvalidPackageStateException $exception) {
+			$matches = array();
+			if (preg_match('~typo3/cms/(.*)$~', $composerName, $matches)) {
+				$composerName = $matches[1];
+			}
 			return $composerName;
 		}
 	}