diff --git a/tests/phpunit/tests/rest-api/rest-search-controller.php b/tests/phpunit/tests/rest-api/rest-search-controller.php
index f7ac562ee4..e60d198ee4 100644
--- a/tests/phpunit/tests/rest-api/rest-search-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-search-controller.php
@@ -54,7 +54,7 @@ class WP_Test_REST_Search_Controller extends WP_Test_REST_Controller_Testcase {
 	 * @param WP_UnitTest_Factory $factory Helper that lets us create fake data.
 	 */
 	public static function wpSetUpBeforeClass( $factory ) {
-		add_theme_support( 'post-formats' );
+		add_theme_support( 'post-formats', array( 'aside' ) );
 
 		self::$my_title_post_ids = $factory->post->create_many(
 			4,