diff --git a/typo3/sysext/core/Classes/Database/ConnectionPool.php b/typo3/sysext/core/Classes/Database/ConnectionPool.php
index 58a8c2ff5157..bfc42a3c4bc0 100644
--- a/typo3/sysext/core/Classes/Database/ConnectionPool.php
+++ b/typo3/sysext/core/Classes/Database/ConnectionPool.php
@@ -124,7 +124,7 @@ protected function getDatabaseConnection(array $connectionParams): Connection
     {
         // Default to UTF-8 connection charset
         if (empty($connectionParams['charset'])) {
-            $connectionParams['charset'] = 'utf-8';
+            $connectionParams['charset'] = 'utf8';
         }
 
         // Force consistent handling of binary objects across datbase platforms