Undisclosed driving offence

Hi, I recently applied for Naturalisation, but forgot to declare motor vehicle offence received on 2/06/2008. The reason for not declaring it was that, it happened 5 years ago, and I have since paid the £70 fine, I was ordered to pay by the court in 2008. I was reading online, about how they categorize good character, I thought Criminal offences were only supposed to be declared if someone was sentenced and besides I only received 3 penalty points for the offence, so its a very minor offence. Can anyone advice if the 3 year rule for non custodial offences is true, because, the offence was 5 years ago, and I pray they don't use this against me, as the application fee is expensive.
Please your kind advice is needed.
Thank you
_________________

Please continue in your other thread