India, now 0-2 behind in the four-match series after losing the second Test today, were hard done when R Ashwin was given caught behind off Mitchell Starc this morning during a stunning batting collapse.
But despite claiming to be at the receiving end of some hard decisions, Dhoni defended not having the DRS in the series.
"There's a lot of 50-50 decisions that are not going in our favour. We're on the receiving end more often than not. What happens in DRS, even if the DRS is around, those (contentious) decisions won't go in our favour," he said.
"There are a lot of ways to use DRS. This is something that needs to be put in a specific way. You're adding too many variables to the game," he added.
Dhoni said umpiring in the series, which has been done by South African Marais Erasmus and England's Ian Gould in the first two Tests, can be better.
"It can improve. There have been quite a few 50-50 calls where we have been on the receiving end," he said.