When users enter an incorrect web address, the Vermont senator pops up in a video to tell them they've lost their way.
"The good news is you're on the right website, and it's a really good website," Sanders says in the video. "The bad news is, you're on the wrong page."
Sanders then tells users to "just scoot down" to the bottom of the page, where a menu of pages on the website can be found. Another incredibly Bernie Sanders thing can be found at the bottom of the page: a note that says the website is "paid for by Bernie 2016 (not the billionaires)."
Watch Sanders' 404 video above.