on http://www.avast.com/de-de/free-antivirus-mac :
“Apple McIntosh” > “Apple Macintosh”
and on:
http://www.avast.com/de-de/free-antivirus-mac#tab2 :
“Mac OS X 10.8.x (Mountain Lion)” > “OS X 10.8.x (Mountain Lion)”
Please fix it and delete this thread.
regards