It appears close enough that I would get/borrow another meter to double-check. I've never seen a multimeter that was good at every function it has built into it. I keep three different ones, different brands even, around for this purpose, so that if I get a reading on one meter that doesn't make sense, I'll check it against the other two. Also, make sure the batteries in your meter are fresh, that the probes are clean, and you have a good, solid ground connection to whatever circuit you're measuring. It is also helpful, since your readings are not far off, to let the power supply sit (powered up of course) and have a chance for all the components to get to operating temperature. Say ten minutes or so.
So, basically, I'd recommend getting a "second opinion" before worrying about those readings too much.
Don Taylor, a.k.a. Brassteacher
"Jack of all trades, master of none, proficient at even fewer..."