This error has existed for at least 2 years and has been reported many times. It is not going to be fixed. If the creators of this program were interested, they would have corrected this by now. Swahili is a beautiful language but you may want to consider using some other program to learn it. In the meantime Duolingo has lots of other language programs that are better organized and maintained. I have completed the entire Swahili course and this is not the only mistake they haven’t corrected.