== What's the problem with "ontic?"  == 

 The use of "ontic" is entirely correct.  Commonly, "ontic" is simply an adjective synonymous with "ontological"- there is nothing grammatically fishy about it.  Its use here is more important than mere grammar however, since Heidegger draws a distinction between the "ontic," which designates beings in their everyday thisness and thatness, and the "ontological," which designates any relation to being as such and in a universal sense.  The distinction between "ontic" and "ontological" mirrors his distinction between "being" and "the being of beings."