diff --git a/phpunit/class-wp-theme-json-test.php b/phpunit/class-wp-theme-json-test.php
index e6398f6930271..6d44ca1536211 100644
--- a/phpunit/class-wp-theme-json-test.php
+++ b/phpunit/class-wp-theme-json-test.php
@@ -16,7 +16,7 @@ function test_get_settings() {
 					'color'       => array(
 						'custom' => false,
 					),
-					'layout' => array(
+					'layout'      => array(
 						'contentSize' => 'value',
 						'invalid/key' => 'value',
 					),