You know, it might be, but it's more likely that there were a few drops of essential oils that made it onto the outside of the diffuser. You can go ahead and wipe it off and let it sit for a little bit; it'll most likely be fine and not actually leaking. This happens to about 1 in 20 people, but we're working really hard on limiting how often it happens. Since we're filled in our facility in the United States by hand, and not overseas by machines, mistakes do happen! We appreciate your patience with that. However, if you see it leaking after waiting for that time, send us an email to firstname.lastname@example.org. We'll take care of it for you!