diff --git a/plugins/ClientSideShorten/shorten.php b/plugins/ClientSideShorten/shorten.php
index 53c2cf5d1a..3e7121db8b 100644
--- a/plugins/ClientSideShorten/shorten.php
+++ b/plugins/ClientSideShorten/shorten.php
@@ -57,7 +57,7 @@ class ShortenAction extends Action
         return true;
     }
 
-    function handle($args)
+    function handle($args=null)
     {
         parent::handle($args);
         header('Content-Type: text/plain');