An unlucky Queensland man has been fined A$151 for driving not too fast, not too slow, but just right.

24-year-old Zac Murray was driving the Sunshine Motorway in Mooloolaba on May 14 when the entirely legal incident occurred. After he received a fine in the mail for driving exactly 100 kilometres per hour in a 100 kilometre zone, he took his bemusement to Facebook.

"Can someone please clarify if I just got one for going the speed limit? Or is my understanding of the word 'alleged' seriously wanting?" he wrote on Monday. "I'm fairly certain I've been caught red handed being a law abiding citizen."

I've never received a speeding fine before. Can someone please clarify if I just got one for going the speed limit? Or is my understanding of the word 'alleged' seriously wanting? Posted by Zac Murray on Monday, June 1, 2015

Murray was driving his dad's car to work at the time, he told ABC News. "People obviously react to the fine, however, they see it as an outrage or otherwise, but to me I'm still thinking it's a pretty amusing hiccup," he added.

Murray said the Queensland Police called him Tuesday to apologise for the clerical error and withdraw the fine.

"An error occurred during the manual adjudication processes, where these records were not identified and rejected as per standard practice and subsequently two notices were issued to the registered owners of the vehicles," the Queensland Police said in a statement.