Nope, it's right, because the box that connects them has a microphone in it that allows you to use them with googletalk, etc. The reason one side's shorter is so that it will be held nearer your mouth.

Look at the plug - it has 4 rings on it instead of the typical 3 for a stereo headset - the extra is for the mic. But regular headphones work fine in the device too for just listening.