Notices LANGUAGE_NEGOTIATION_xyz in new installation V 4.0 alpha3 german language

Fresh installation of Drupal 7 german + CiviCRM 4.0 alpha 3 + Language Pack civicrm-4.0.alpha3-l10n.tar.gz

When entering as Admin in CiviCRM Home there's a red container with three notices:

• Notice: Use of undefined constant LANGUAGE_NEGOTIATION_NONE - assumed 'LANGUAGE_NEGOTIATION_NONE' in CRM_Core_Config->_setUserFrameworkConfig() (Line 254 in <myinstallation path>/drupal/sites/all/modules/civicrm/CRM/Core/Config.php).
• Notice: Use of undefined constant LANGUAGE_NEGOTIATION_PATH_DEFAULT - assumed 'LANGUAGE_NEGOTIATION_PATH_DEFAULT' in CRM_Core_Config->_setUserFrameworkConfig() (Line 256 in <myinstallation path>/drupal/sites/all/modules/civicrm/CRM/Core/Config.php).
• Notice: Use of undefined constant LANGUAGE_NEGOTIATION_PATH - assumed 'LANGUAGE_NEGOTIATION_PATH' in CRM_Core_Config->_setUserFrameworkConfig() (Line 256 in <myinstallation path>/drupal/sites/all/modules/civicrm/CRM/Core/Config.php).

Switched the language to german in Administrier -> Configure -> Global Settings -> Localization but the notices remain.