DS7 had a spelling test today and one of the words was

beautiful
He has been able to spell this for about 3 years....... he misspelled it?
He spelled it beuatyful.

This is extremely strange for him, he very rarely misspells a word and if so, it's usually one letter off. He will trade out a vowel, typical mistakes for a good speller.

This looks like something I would do...... I'm dysgraphic. (Badly)

Should I be worried?