I did the same thing. What I did was take a plastic water bottle and cut both ends off. Now you have a plastic tube, which you then cut lengthwise so that you have a curved plastic piece. Tape one end to your filter cover, and stretch the other end so that it curls around the outflow area.
Here's a pic of mine:
Sorry I don't have a better pic. I actually took that one to show a different angle of my setup but I think you can get the picture.