How to fix Dipstick problem with Vauxhall Corsa 1.0 Club?

I have a problem with my dipstick on Vauxhall Corsa, the tube where the dipstick fits into has actually come off the engine alltogether. When speaking to a mechanic he just said that its quite a common fault with corsa's and best thing i can do it just am it back in, as there no way to fix it. Anyone else got an opinion please?

Thanks