diff --git a/Classes/Updates/MigrateSchedulerTasks.php b/Classes/Updates/MigrateSchedulerTasks.php
index b4e33bfb36289d641ece999743300dd63c15d9ce..00381f8e2658c2e6b5ae22b5bffbb255041c4b5a 100644
--- a/Classes/Updates/MigrateSchedulerTasks.php
+++ b/Classes/Updates/MigrateSchedulerTasks.php
@@ -135,7 +135,7 @@ class MigrateSchedulerTasks implements UpgradeWizardInterface {
 		foreach ($tasks as $_task) {
 			$task = unserialize($_task['serialized_task_object'], [\__PHP_Incomplete_Class::class]);
 			$taskVars = $this->cleanArrayKeys((array)$task);
-			$identifier = $taskVars['*commandIdentifier'];
+			$identifier = $taskVars['*commandIdentifier'] ?? '';
 			if (
 				$identifier === 'sg_news:migratenews:runmigratenews'
 			) {