diff --git a/cake/libs/view/helpers/js.php b/cake/libs/view/helpers/js.php
index e4a994ef6..887276cb0 100644
--- a/cake/libs/view/helpers/js.php
+++ b/cake/libs/view/helpers/js.php
@@ -822,7 +822,7 @@ abstract class JsBaseEngineHelper extends AppHelper {
  * @param array $options Array of options for the effect.
  * @return string completed string with effect.
  */
-	abstract public function effect($name, $options);
+	abstract public function effect($name, $options = array());
 
 /**
  * Make an XHR request