$router->addRoute('routeName', new Zend_Controller_Router_Route( 'test/:category/', array( 'module' => 'default', 'controller' => 'test', 'action' => ':category' ) )); That's my code at the moment (see above). How could I call now the action by a given param (via URL)? The url look e.g. like that: domain.com/test/news/ and now I want to call the action newsAction() in the test controller. With the code above I get the error: Action "category" does not exist and was not trapped in __call()