diff --git a/core/modules/content_moderation/tests/src/Functional/DefaultModerationStateUpdateTest.php b/core/modules/content_moderation/tests/src/Functional/DefaultModerationStateUpdateTest.php
index a2e80d4f88..d6c96b5b95 100644
--- a/core/modules/content_moderation/tests/src/Functional/DefaultModerationStateUpdateTest.php
+++ b/core/modules/content_moderation/tests/src/Functional/DefaultModerationStateUpdateTest.php
@@ -30,12 +30,14 @@ protected function setDatabaseDumpFiles() {
    */
   public function testUpdateDefaultModerationState() {
     $workflow = Workflow::load('editorial');
-    $this->assertFalse(isset($workflow->getTypePlugin()->getConfiguration()['default_moderation_state']));
+    $configuration = $workflow->getTypePlugin()->getConfiguration();
+    $this->assertFalse(isset($configuration['default_moderation_state']));
 
     $this->runUpdates();
 
     $workflow = Workflow::load('editorial');
-    $this->assertEquals('draft', $workflow->getTypePlugin()->getConfiguration()['default_moderation_state']);
+    $configuration = $workflow->getTypePlugin()->getConfiguration();
+    $this->assertEquals('draft', $configuration['default_moderation_state']);
   }
 
 }