AIBU to be annoyed over the wrong spelling on my DS's name

[PizzaSlut]

He's 4 and we're just receiving the first lots of christmas cards from school.

The amount of parents that have spelt his name wrong is astounding. It's very common and has a really easy shortening that we use so surely it can't be that difficult to address him correctly.

Or AIBU?

yabu - lots of cards to write = easy to make a mistakes. My DC either have unusual names or names that can be spelt more than 1 way - I actually find it amusing to see how many diff versions we get. I have a name that can be ended 3 diff ways and a surname that people ALWAYS get wrong. Occasionally it niggles but in the grand scheme of things there are much more important things in life to stress about.