A seven-year-old girl out Smartie-d chocolate giants Nestlé after spotting a spelling mistake on a tube of sweets.
Eva Ball was tucking in when she saw a question on the tube which read: "What T might you look at the stars trough?"
But after writing to Nestlé to point out the missing 'h' she was rewarded with a (rather measly) £2 voucher – and a letter peppered with corporate jargon.
Her mum Allison, 45, from Sheffield, said: "She came running in saying I've found a spelling mistake.
"I thought she couldn't be right but when I looked she was.
"It should be through they've missed the 'h' out. Not a good advert for spelling on children's sweets.
"Eva loves her Smarties and she also loves to read. She is fantastic at it and reads above her age level.
"She was overjoyed when she found it. She was so chuffed with herself. She has still got the tube and won't eat the Smarties."
Eva's dad David said: "Eva's a little bookworm. The school have put her on the register for the gifted and talented so it's been recognised that she's very talented in that area. She's very clever."
A spokesman for Nestlé said: "A good spot from Eva. The tube was corrected at the end of last year and the updated packs should be in stores now.
"Smarties may have all the answers but not necessarily the right questions."