Read the handbook it tell you how to reset it. As long as that's all that has appeared, you should be ok.
My Cactus, the service light came on at 3500 miles (by the dealer) So I reset it to come on at 10.000 miles.
And got the oil and filter changed. Then reset it for 20.000 miles. Ohh and I purchased a service light re-seter also, from my local Aldi.