Configuration of module fails if CCK isn't available

I just installed the module. The only precondition was fulfilled: install the simplehtmldom module. I got a success message and the module was enabled. At the configuration menu a click at the Glossify entry raises Fatal error: Call to undefined function content_fields(). I installed and enabled the CCK module and now it works. This behavior is reproducable by disabling the CCK.

Please add the CCK to the required modules list.