What do I do when my 1 yr old German Shepards ear has fallen?

He is 1 yr old solid black and a breeding dog. His ear has fallen and I do not know what to do, can I make it come back up?, will he be ruined as a stud dog? He is my baby and I love him to death but I can notkeep a straight face when he has one ear high in the air and the other is floped he is suposed to also be a gaurd dog and I do not think he will be mkenacing like this is there anything I can do?