loose hold switch

The hold switch on my 3rd gen iPod Nano seems to be getting looser and looser. It doesn't "click" anymore. When I push it to the hold position, sometimes the little lock icon blinks once or twice like it's not on hold. It doesn't seem to want to stay on hold and as a result the battery is draining more quickly than usual. Is there anything I can do to fix it, or at least prevent it from getting any worse?