Consequences for filing return under itr1 instead of itr2

Dear Experts

I have salary income and also had short term capital losses during AY 2017-18. During previous two assesment years I had filed ITR2 shown short term capital losses in both the years, but in AY 2017-18 due to last minute rush I had to file ITR1 shwoing only salary income and ignored Short Term Capital losses. My worry is now what will be the consequences for filing wrong form ITR1 and ignoring capital losses.

Is this possible toI file the revised return in using ITR2 and reporting capital losses?

Appriciate your advices. Thank you