shal we sum this up guys?
Nannon
Dont say anything as this may draw unnecessary attention to something that may be unoticed
A lie, nevermind how white it is (and in your case its a white one), is not a good first impression any company will like.
If they do notice the discrepancy, you should be honest. Because they may check or ask for proof from you certificate, and upon finding out that you have lied again, they may burn you at the stake.
Its a shame, as I can see why you did it, but can they?