A little Brainteaser...

OK so this isn't actually an original, but I have used this one a couple of times in the past and it never fails to get a smile if people don't get the answer straight away.

"What word actually becomes longer when you remove a letter from it?"

If you don't get it straight away, then enjoy puzzling over it for a while.

If you work out the answer then post it here, if not then hopefully I'll remember to come back in a few days and post it!