diff --git a/cake/tests/cases/libs/error_handler.test.php b/cake/tests/cases/libs/error_handler.test.php
index 9030e6c21..61d77dda1 100644
--- a/cake/tests/cases/libs/error_handler.test.php
+++ b/cake/tests/cases/libs/error_handler.test.php
@@ -236,6 +236,9 @@ class ErrorHandlerTest extends CakeTestCase {
  * @return void
  */
 	function testHandleException() {
+		if ($this->skipIf(file_exists(APP . 'app_error.php'), 'App error exists cannot run.')) {
+			return;
+		}
 		$error = new Error404Exception('Kaboom!');
 		ob_start();
 		ErrorHandler::handleException($error);