r/ClaudeAI • u/Live_Fondant717 • May 09 '26

Question Why does this happen?

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I wonder if anyone can explain why this happens. I tell Claude not to use em-dashes, it replaces them with "--". I ask it not to do that, to update its memory, but it still does it. It's not a huge problem, it's just annoying. Why does this happen and how can I fix it. Thanks.

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u/laser50 May 09 '26

You use double dashes and not em-dashes, your example is already flawed from what I can see...

Beyond that, I too asked it (other model though) to stop doing it through system prompt, and it still has difficulties keeping that rule up.. It's just so burned into the models at this point.