Autocompletion when browsing ssh server in zsh

i realized that my zsh does not autocomplete the folders of a SSH server when I am in a local terminal and use cd, rsync or any other command. The bash in Ubuntu does this. e.g.:

rsync -avh --progress user@host:/folder1/subfolder/another_subf . -n

the command works so I can connect, its just very uncomfortable when you have to type and know every foldername by heart.