The ZF documentation says that in order to implement a modular design (with standard directory structure as explained in Zend Framework: Documentation), I should call It goes on to say "a module will only be matched if a key of the same name exists in the controller directory array passed to the front controller and dispatcher". So I added the line But when I try to load www.mysite.com/module1/cont1, I get an error. Even when I try to load www.mysite.com/module1/cont1/index, I still get an error. The controller and index action do exist. It finds the controllers for my default module just fine. What am I missing?