I'm Not a Greek Scholar

I'm not a Greek scholar. In fact, I've actually only formally studied Greek for one semester. And that was during a crash Summer course almost 25 years ago. But, on a recent walk through the Christian Quarter, I caught this Greek mistake.

For those who would jokingly say, "It looks Greek to me" because you don't read Greek, the symbol is the Christian fish with the Greek acronym IXTHUS in the middle. IXTHUS is a Greek acronym for "Jesus Christ God Son Saviour."

Anyway, the funny thing about this is that I saw the car that was decorated with this symbol parked outside this place: