His effort demonstrated why he is a very lonely ray of hope for his struggling side.
Denmark, who were without influential midfielder Martin Jorgensen, were back in front again after just five minutes.
Ebbe Sand, who was also returning after injury problems, made sure of it on 67 minutes.
The Danes now have every cause to be upbeat going into the tournament, where as well as Senegal they face France and Uruguay.
Tunisia, though, are facing the prospect of utter humiliation.
If things do not improve soon they may find themselves having one of the worst World Cups since Zaire went home in 1974 with no goals for and 13 against.