Tds late payment

I have filed 4th quarter (2013-14) TDS 26Q original return. original return was filed only for 194J TDS. After the return was filed, TDS on rent(194I) was paid in the month of may 2014. So I have filed revised return for Q4. But that Revised return was not processed by the TDS department.Department stated that there is an error in the return. Then I downloaded justification report for the revised return from TDS traces website. It indicates that I have failed to pay Interest on TDS amount.Contention of the department is correct. But now how I should proceed? How to show only interest in the challan while paying? After paying should I file once again revised return or rectification?