diff --git a/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeExecuteTestBase.php b/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeExecuteTestBase.php
index bb822b9370..fc9529ee40 100644
--- a/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeExecuteTestBase.php
+++ b/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeExecuteTestBase.php
@@ -94,7 +94,7 @@ public function testMigrateUpgradeExecute() {
     }
     else {
       $session->responseContains('Unable to read from Public files directory.');
-      $session->responseContains('Unable to read from Private file directory.');
+      $session->responseContains('Unable to read from Private files directory.');
     }
 
     // Restart the upgrade process.