Martin Lewis has issued a pension warning to anyone who is getting divorced.
The MoneySavingExpert.com founder took to social media to inform people about a "simple" mistake which could impact their pension if they are splitting from their partner.
If you are married, then your pension and its assets will often automatically go to your spouse if you die.
However, this could cause issues if you and your partner split up.
Martin told his followers that you are not able to gift your pension in a will and if you want to make sure it goes to the right person, and not your ex, then you must steps.
With pensions, you will need to fill out an expression of wishes or a nomination form - this is found on your company or private pension.
This tells the pension company who you want your pension to go to if you pass away.
If you die, then the person named on your nomination form will either get a lump sum or inherit the remaining pension.
You will need to fill one out for each pension you have in case you have more than one.
If you go through a major change, such as a divorce, you will need to update your "expression of wishes" form to represent your new wishes.
If you don't, you could risk hundreds of thousands of pounds going to an ex-partner.
The Money Saving Expert tweeted: "Warning. Don't accidentally leave your pension to an ex! You can't leave pension savings in your will.
"Die before taking your private/company pension and the provider/trustees decide what to do with it."
"Fill one in (your provider should have them).
"If you have, but years ago check it's up to date or as I was told... Colleague's ex-husband was still on her nomination form.
"Family had to contest. Nightmare for all involved."
According to Hargreaves Lansdown, the average pension pot for people aged between 55 and 64 is around £107,300.
However, the top 10% of earners could have a pot worth even more at around £637,500.
The financial services company advised people to check their workplace or private pensions to see what death benefits they offer.