ALT - wtf?

I have problem with my SWEP.

http://img217.imageshack.us/img217/49/swepprob.jpg

I want to get rid of this “ALT 28”. What shall I do? Help!

Get rid of your altfire ammo.

But how? Could you give me a line that I should change?

SWEP.Secondary.Ammo = “none” or something like that.

It worked. Thanks!