diff --git a/core/modules/media/tests/src/Functional/MediaUiFunctionalTest.php b/core/modules/media/tests/src/Functional/MediaUiFunctionalTest.php
index 4aa3f00..184969c 100644
--- a/core/modules/media/tests/src/Functional/MediaUiFunctionalTest.php
+++ b/core/modules/media/tests/src/Functional/MediaUiFunctionalTest.php
@@ -55,6 +55,8 @@ public function testMediaWithOnlyOneMediaType() {
     $page->fillField('revision_log_message[0][value]', $revision_log_message);
     $source_field = $this->randomString();
     $page->fillField('field_media_test[0][value]', $source_field);
+    // Verify the "Save" button is the last element on the page.
+    $assert_session->elementNotExists('css', 'form #edit-actions + div');
     $page->pressButton('Save');
     $media_id = $this->container->get('entity.query')->get('media')->execute();
     $media_id = reset($media_id);