When Jervis is about to play the drums for Griggs, his brushes suddenly turn into sticks between shots.
When Julie draws Daddy Long Legs on the chalk board, the arms are drawn at a downward angle. In the distant shots, the arms are noticeably more horizontal.
As Jervis daydreams over the letters, objects on the desk change position.
In a scene between Griggs and Pendleton, Pendleton, seated at the drum kit, points a drum brush at Griggs and then drops his hand as Griggs walks past him. In the immediate next closer shot of Pendleton, his arm is still raised with the drum brush pointed at Griggs.
When Jervis (Fred Astaire) is collecting Julie (Leslie Caron) at the airport and by chance bumps into U.S. Ambassador Alexander Williamson (Larry Keating), he says "Hi, Larry" and introduces him to Julie as Mr Hamilton.