Albert Gifford, a 15-year-old schoolboy from Somerset, UK, is on a crusade to get giant companies like Tesco to use English correctly.

Albert wrote to Tesco to politely complain when he saw that his carton of juice was made with the “most tastiest” oranges, suggesting that they correct it to “tastiest” or “most tasty”. When he didn’t get a reply, he wrote to the Daily Mail. The day after the newspaper printed his letter, he received a response from Tesco apologising for their grammatical error and promising to change the packaging when it’s next reprinted.

Read more about why the schoolboy gets so frustrated with incorrect grammar and his latest target (BMW) here.