Printer printing bigger than actual size.

I have a HP printer and I have set my illustrator document to 50mm wide by 85mm height, but however when it prints the actual sizes measures 53mm by 88mm.

I have been trying to figure it out but I still can find anything :icon_confused:

Theres obviously something that is set to make it go 3mm wider on both width and height but I just cant find anything...

Any suggestions?
It's adding a margin to account for printer bleed.

Try setting custom trim settings of 0 in the print menu.