"But as I said we need to build on this, we can't be happy with one test match." Ishant had three wickets in the match but could have had more.
Having dismissed opener Aaron Finch lbw with the second ball of the second innings, the wicket was cancelled when replays showed Ishant had overstepped his mark, one of five no-balls by the seamer in the match.
"We were all happy celebrating but he was really, really angry with himself," said Kohli, whose side head to Perth this week with a 1-0 lead in the four-match series.
"Ishant is going to be obsessed about not doing it again."