Eiichiro Oda doesn’t make many mistakes when drawing compared to most manga artists, but when he does his fans make sure to point them out and let everyone know. This week’s latest issue of Weekly Shonen Jump magazine featured a double color page spread of the Straw Hat Pirates as bikers and just riding on the road like so:

However, Twitter user Takumitoxin has noticed something wrong with the Bike Usopp and Chopper are riding:

Here’s the original tweet: