Clubbing of income from two employer

Hi,

In April and May 2014, I worked for X company and from June beginning I am in company Y. While submitting documents to my current company I missed to mention the income from previous employer and later Income tax was filled with current company salary income. 

Now while updating e-File ITR 1, in tab 'Tax details', I found the income of previous company along with current company salary Income with TDS amount.

X Co. Income from salary 52458 and Y company salary 725313. (both are gross).

Now the question is should I need to mention the total of both companies'  Net salary  under Income details Tab, in B1 'Income from salary'? If I do so then the taxable income will be different than the one mentioned in  Form 16 given in current company. Please advice.

Thanks

Vyshnava