diff --git a/ext_tables.php b/ext_tables.php
index cac473f0..352e8554 100644
--- a/ext_tables.php
+++ b/ext_tables.php
@@ -71,7 +71,7 @@
         );
     }
 
-    $GLOBALS['TYPO3_CONF_VARS']['SYS']['locallangXMLOverride']['/typo3/sysext/backend/Resources/Private/Language/locallang_layout.xlf'] = 'EXT:wv_deepltranslate/Resources/Private/Language/locallang.xlf';
+    $GLOBALS['TYPO3_CONF_VARS']['SYS']['locallangXMLOverride']['EXT:backend/Resources/Private/Language/locallang_layout.xlf'][] = 'EXT:wv_deepltranslate/Resources/Private/Language/locallang.xlf';
 
     \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addLLrefForTCAdescr('tx_wvdeepltranslate_domain_model_glossaries', 'EXT:wv_deepltranslate/Resources/Private/Language/locallang_csh_tx_wvdeepltranslate_domain_model_glossaries.xlf');
     \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::allowTableOnStandardPages('tx_wvdeepltranslate_domain_model_glossaries');