diff --git a/cake/tests/lib/cake_test_case.php b/cake/tests/lib/cake_test_case.php
index 3801d884b..c189e87af 100644
--- a/cake/tests/lib/cake_test_case.php
+++ b/cake/tests/lib/cake_test_case.php
@@ -269,7 +269,7 @@ class CakeTestCase extends UnitTestCase {
 			}
 			
 			ob_start();
-			@$dispatcher->dispatch($url, array_diff_key($params, array('return' => 0)));
+			@$dispatcher->dispatch($url, $params);
 			$result = ob_get_clean();
 
 			if ($return == 'vars') {