Like Don Draper and Stannis Baratheon before him, Harry Styles will not let poor grammar slide. During a One Direction concert last week, Styles paused the show to fix a sign in the crowd that read, “Hi Harry, Your So Nice.”

The young fan who made the error took the lesson in stride, tweeting her thanks at Style for his corrections.

Just another day in the life of a Directioner. Read about more summer struggles in the life of One Direction fans here.