I have a display problem

I’m using Corona to create a Landscape-oriented Android game. I’ve made the background 480 X 320, and it displays properly on the y-axis, but I have black bars on the x-axis on each side of the screen. Any ideas where I should start to fix this?
[import]uid: 76465 topic_id: 23142 reply_id: 323142[/import]

What size is the screen of your device?

If it’s wider and your zoom is set to letterbox in config.lua this will happen. [import]uid: 52491 topic_id: 23142 reply_id: 92547[/import]