Do I need to fill in the middle name on the Thai eVisa form if my French passport has none?

Hello everyone, may I ask something?

I’m French, and on my French passport there is no middle name (French passports usually list only the given name and the surname).

For the Thai eVisa form, should I leave the ‘middle name’ field blank?

Example

Given name -H,K

Surname -Moses

Should I support to put K in the middle name form?

Will it cause any issue or rejection?

Thank you in advance