Wrong e-tax chalan

Sir,

i did e-fillinf of in-come tax. apart from salaried income i was liable to pay a small amount of tax on my interest income earned from hdfc bank salaries.

By mistake i used wrong form for challan and instead of giving my PAN account number in challane form i gave the TAN number of bank which paid me interest on my income.

i have yet to send the signed copy to income tax office but have uploaded sahaj form on internet,

please help me how to correct the same. tax filed is for assessment year 2012 -13.

thanks.