Recent research into complementation has targeted not only semantic or syntactic factors, but also extra features, one of which is the horror aequi principle. With the support of the British National Corpus, the present study investigates three pairs of adjectives: in each case one ends in -ed, and the other in -ing. The analysis has shown that horror aequi has little influence on the complement choice following an adjective, whereas the sentence subject governs that choice in a pronounced manner.