This movie was seen by 17 million people in France, a box-office record in that country until Titanic (1997).
Louis de Funès (Stanislas) is viewed playing the piano when he is at the Paris Opera House. In reality, during World War II, de Funès played the piano in bars in Paris during the occupation.
This film was the most successful French film in Germany until Welcome to the Sticks (2008) was released.
Held the attendance record in France for 42 years (17 million people saw it when the population of the country was 50 million).
Actor Bourvil had arguments with Louis de Funès' wife because she always came on the set interfering in her husband's work.