diff --git a/tests/phpunit/tests/rest-api/rest-block-type-controller.php b/tests/phpunit/tests/rest-api/rest-block-type-controller.php
index b7342a0a43..f2ca8eeb3b 100644
--- a/tests/phpunit/tests/rest-api/rest-block-type-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-block-type-controller.php
@@ -223,7 +223,7 @@ class REST_Block_Type_Controller_Test extends WP_Test_REST_Controller_Testcase {
 			'parent'           => 'invalid_parent',
 			'ancestor'         => 'invalid_ancestor',
 			'supports'         => 'invalid_supports',
-			'styles'           => 'invalid_styles',
+			'styles'           => array(),
 			'render_callback'  => 'invalid_callback',
 			'textdomain'       => true,
 			'variations'       => 'invalid_variations',