This is actually the right way to do it. It is the way that the web md site would recommend you do it and then as you loose weight you will need and hopefully want less and less calories.
Well, to be honest, that sounds like a low amount of caloric intake for a male your age, but I do not know how tall you are or what your lifestyle might be or if you are currently obese and are attempting to lose significant weight. I am not a nutritionist, etc., so I cannot speak with any authority on the matter, but as just someone who tries to stay fit and healthy, I might suggest that you have your calories down about as low as you should safely go without medical supervision -- and that what you should do is increase your calorie burning by being more physically active. You need not aim of Olympic standards -- just start walking -- walk around the block, walk two blocks, get to walking at least four or five miles a day. Begin jogging and then running. Maybe take up swimming or bicycling. Add some ba<x>se weight-lifting (again, not Olympic stuff, just burn calories and tone your body).
Oops, I'm sorry. You have a fairly generic icon (yeah, I know, so do I) and when I hoovered my cursor over it it just showed me your EP name and your age bracket and I guess I just made the wrong assumption. And now I've taken a couple of minutes to look at your EP topic groups, etc. and I won't even say anything about food or weight or anorexia because obviously you don't need me to repeat stuff you probably know better than I do. Please be careful of your health... and good luck.