Goals by Didier Drogba and Alex booked Chelsea a place in the FA Cup semi-finals at Wembley.
Hiddink said: “We had one little thing to cope with before the match but it did not dominate what is happening at Chelsea.
“Yesterday we had this one issue but it was important that it did not cause friction in the team.”
He added: “It is not easy with the way Coventry play with the long balls up to their strikers but we managed to control them and play well.
“We scored a beautiful first goal although we were a bit sloppy when scoring a second goal after playing so well in the first half.”
