// Let's be a bit paranoid
ASSERT(is_dag());
- // We use call find_shortest_path here to set properly the distance,
- // so that we can make all the edge lengths positive at the first
- // iteration.
+ // We call find_shortest_path here to set properly the distances to
+ // the source, so that we can make all the edge lengths positive at
+ // the first iteration.
find_shortest_path();
do {