I (most likely) made this change to the credits yesterday after watching the episode. I assume were are talking about the first episode of season 5 called Orientation: Part 1 (http://www.imdb.com/title/tt6878538)
You do not have an onscreen credit as you can see in the picture below.
I also doubled checked to make sure that you are not in the beginning credits with the series regulars and guest stars.
Per IMDb's cast guide, this is correctly designated as "uncredited" since you received no on-screen credit. See the sections on uncredited work and the uncredited attribute (unfortunately, I can no longer directly link to it.)