What should I do with a rabbit wound?

I was just about to put my rabbit back in his hutch & his just jumped out of my arms and into the hutch door. I picked him up & put him at the top of the hutch to see if he was okay. I felt so terrible that I didn't stop him from jumping out of my arms :( He has a small cut above his lip (The cut isn't deep) & under his nose. He is acting like normal, he is eating like normal but he's licking his mouth quite a bit. Should I worry?