The Victorian government is standing by its sentencing laws after the police union criticised the punishment handed to a man convicted of bashing officers.
Attorney-General Martin Pakula says a sentence one month short of the mandatory term indicates the system is not broken.
"I would make the point that the statutory minimum for causing injury recklessly to an emergency services worker is six months," he told reporters on Friday.
And he insisted the government is making some sentences tougher.
"We have implemented new laws in regards to injury caused to police officers through things like car ramming, which also contain statutory minimum sentences.
"And when people are charged and convicted of those offences, we expect those statutory minimums to be applied."
The government's defence of its legislation comes after News Corp reported 37-year-old Shaun Mowbray received a five-month prison sentence after attacking two officers trying to arrest him in October.
Mowbray pleaded guilty to a lesser offence and therefore avoided the mandatory six-month minimum sentence, despite having eight previous convictions for assaulting police, the Herald Sun reported on Friday.
The plea to the lesser charge was accepted by prosecutors.
"This person pled guilty to a lesser charge and he got five months in any case - he almost got the statutory minimum had he been convicted of the more serious offence," Mr Pakula said.
Police Association secretary Wayne Gatt says the sentence does not send a message to repeat offenders.
"The community has lost the service of a police officer for at least two months," he said in relation to one of Mowbray's victims.
"The man who caused that to happen will probably be back walking the streets before that officer returns to duty. There's a massive inequity it that."
Shadow attorney-general John Pesutto says mandatory prison sentences of 10 years were needed for repeat violent offenders.
"We really need to stop the merry-go-round of violence in Victoria," he said.
"How many more police officers have to suffer by dealing with these violent re-offenders who have gone through our justice system with just a slap on the wrist?"