Clarification on 143(1)

Hello, 

I had efiled for my return and i received intimation 143(1) today , There is a mismatch in the refund i requested and the refund Income tax dept has calculated. The difference is due to interest on the refund amount.  I.e  they have added some 170 rupees in my refund.  So should i file for correction as there is a difference in amount claimed and amount calculated?  or is it ok if my claim is less than the refund calculated by Income tax dept.