Wrong itr form

I usually file ITR1 form since am a salaried employee. Last financial year I invested in equity and made some profits. Since there are some short term capital gain it looks like I should have filed the ITR2 form but I have filed ITR1 unknowingly as usual.

What should be the next steps?

Do i need to file a revised return or how to rectify this mistake?

Does cpc reject my form in this case and I can file rectification request?

Please guide me.