Late fee 234 f

I had filed original IT return on 14/09/2018 u/s 139(1)within due date (It has been extended to September 15, 2018 only for tax payers resident in Kerala due to the floods there). On 26/10/2018 i revised return. But there is INTIMATION U/S 143(1) demanding fee for late filing. Need i required to pay late fee.