The tennis star, who played against Andy Murray in the final match in Melbourne, was watched in awe by his son Stefan back at home in Serbia.
A seven second video, posted by Djokovic's wife Jelena on Twitter, shows Stefan pointing at his dad on the TV with excitement.
As soon as he recognises his dad, Stefan starts shouting "Mum" and runs up to the screen.
However he soon loses interest when a close-up of Andy Murray comes on screen.
Jelena tweeted the video with the caption: "We are watching mummy - daddy #teamdjokovic #nolefam #AusOpen #final."
The adorable video has been retweeted 3,200 times in two days since being uploaded on 31 January 2016.
Djokovic and his wife welcomed their son in October 2014. The couple have been together since 2006 and married in Montenegro in July 2014.