Downloaded ABAP program extension is .txt?

hi ABAP experts,

I am trying to download abap program to a local drive with .abp extension, but when I perform the following, find the extension is .txt other than .abp. Not sure if i can upload .txt file later?

Thanks!

in SE38

enter program name & click Display,

then goto menu Utilities --> More Utilities --> upload / Download -->

click on Download.