Trunk Lid Pops open when I put car in Drive

I know it sounds crazy, but every time I put the car in R or D, the trunk lid pops open. I have to put it in gear, then have someone put the trunk lid down! Anyone know how to fix this?:confused:

Do you have a push button on the dash to open the trunk. Look for a bare wire around this push button.

Thanks for the suggestion. I called the Service Dept and suggested the "short". Hope that's all it is.