Glenn Close and Cathy Moriarty where considered for the role of Claudia.
Motel Owner: It ain't Roy!
Anabel: But it says on his shirt...
Motel Owner: It ain't my shirt!
Anabel: So who's Roy?
Motel Owner: Got a brother Roy!
Anabel: Is that his shirt?
Motel Owner: Was. Roy's dead. I needed a clean shirt.
When Murray casts a wish in the school corridor, the red paper and pictures on the noticeboard behind him disappear and re-appear numerous times.
After "The Bubble Factory" at the start of the film, tricks are played for the next 4 frames: 1) "Feivbrsel Puctorus and Thn Beabla Uictsry Present" quickly rearranges itself to read "The Bubble Factory and Universal Pictures Present"; 2} "A Sheinberg Production" is first shown with "Sheinberg" rotated 180°; 3) "A Michael Ritchie Film" is first shown with the letters squashed to the right with the bottom of each letter unmoved - they each quickly right themselves; 4) The title is first shown as "A Simqle Wish" - the "q" then spins around its vertical axis, ending up as a "p".
$2,732,880 13 July 1997