Index: typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php
===================================================================
--- typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php	(revision 5c2e614fc89be80bb063db691e08fc3c4abe76c5)
+++ typo3/sysext/core/Classes/Tree/TableConfiguration/DatabaseTreeDataProvider.php	(revision c9d47173004088fb7088708c0645ff2df862bc44)
@@ -239,7 +239,7 @@
 			$node->setExpanded(TRUE);
 			$node->setLabel($GLOBALS['LANG']->sL($GLOBALS['TCA'][$this->tableName]['ctrl']['title']));
 		} else {
-			$row = \TYPO3\CMS\Backend\Utility\BackendUtility::getRecordWSOL($this->tableName, $basicNode->getId(), '*', '', FALSE);
+			$row = (array) \TYPO3\CMS\Backend\Utility\BackendUtility::getRecordWSOL($this->tableName, $basicNode->getId(), '*', '', FALSE);
 			if ($this->getLabelField() !== '') {
 				$node->setLabel($row[$this->getLabelField()]);
 			} else {