Tough crowd! Prince William and Kate Middleton‘s eldest son Prince George turned six on Monday, and while the king-to-be received multiple wishes from fans and family the world over, one missive has drawn more than it’s share of attention.

On Sunday, Meghan Markle and Prince Harry wished their nephew a happy birthday under Kensington Royal‘s collection of birthday photos celebrating George’s big day.

“Happy birthday,” the couple wrote underneath the pic. “Wishing you a very special day and lots of love!”

The Duke of Duchess of Sussex thanked them, but not everyone was pleased.

“He is the future KING. Treat him with respect,” one commenter wrote. “He is HRH!!!!!!!!!”

“He is HRH Prince George to you!!!!” another wrote. “Don't forget to mention!”

Others pointed out that even other royal accounts used “HRH” in their messages.

“When all the royal accounts have used a 'prince' except yours…so there is really something,” another critic commented.

Still, others begged the naysayers to relent.

“They are his uncle and aunt,” wrote one commenter. “No need to write his title. Being sincere is more important.”

“Stop nitpicking and relax,” added another. “You just want to find fault where there is none. Family is family and how they address each other in public or private is none of your concern.”