If you can get away with no there is nothing wrong.
It may fall over when heavy load is put on it, you should test it at the voltage it is at with a cpu stress test.
Overclocking often requires a bit of voltage increase of the cpu to keep it stable.
But not all 2500K cpu`s will be the same when it comes to overclocking.
Some will do better than others, or worse.
keep an eye on your temps of the cpu as well
Make sure you have good cooling for the cpu, the stock intel HS and fan would of been made without overclocking the chip in mind.