A few days ago I noticed this error message in updates
Failed to fetch http://dl.google.com/linux/chrome/deb/dists/stable/Release Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)
Actually, the solution was simple by adding
deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
After each restart or I don't know a precise moment when it happens it just disappears, any idea how to fix it for good?