Can you spot what's wrong with RCD Espanyol's team bus?

At first glance it's difficult to spot the difference. But those who have seen the official coach of RCD Espanyol from above will have noticed that FC Barcelona's initials were emblazoned on the roof. 

The rest of the bus was decorated with the white and blue of Los Perquitos, while on one side you can see the badge of Espanyol, but this imagine captured by @juli_juli from the Montilivi tribune makes it clear that all was not as it should have been.

The image tore through social media and the Espanyol team acted quickly. Minutes later the bus was changed to remove the lettering. 

Barcelona beat their rivals 4-2 on penalties after a 1-1 draw in the Catalan Super Cup.