Air Conditioning Drain Line on subframe

2010 Prius
189k miles
Doing the oil change tonight I noticed why it’s been brown on the floor where the air-conditioning has been dripping.

It looks like the drain for the air-conditioner drips across the sub frame. I understand what I’m seeing is only surface rust but still it’s annoying on the floor.

Does anyone have a better solution than what I did tonight as a temporary fix which was jamming a smaller tube I had into the drain extending it toward the passenger wheel tie down??