diff --git a/tests/phpunit/tests/blocks/register.php b/tests/phpunit/tests/blocks/register.php
index 1bb579e9928c3..2e17ad734368b 100644
--- a/tests/phpunit/tests/blocks/register.php
+++ b/tests/phpunit/tests/blocks/register.php
@@ -561,7 +561,7 @@ public function test_register_block_type_accepts_editor_script_array() {
 
 		$registry   = WP_Block_Type_Registry::get_instance();
 		$registered = $registry->get_all_registered();
-		$actual     = json_encode( $registered['core/test-static']->editor_script );
+		$actual     = $registered['core/test-static']->editor_script;
 
 		$this->assertSame( $settings['editor_script'], $actual );
 	}