diff --git a/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php b/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
index 9741a0b..c3a64d4 100644
--- a/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
+++ b/core/modules/migrate_drupal_ui/tests/src/Functional/MigrateUpgradeTestBase.php
@@ -147,6 +147,7 @@ public function testMigrateUpgrade() {
     $this->drupalPostForm(NULL, $edits, t('Review upgrade'));
     $this->assertResponse(200);
     $this->assertText('Are you sure?');
+    $this->drupalPostForm(NULL, [], t('I acknowledge I may lose data, continue anyway.'));
     $this->drupalPostForm(NULL, [], t('Perform upgrade'));
     $this->assertText(t('Congratulations, you upgraded Drupal!'));