media files returns 404 not found

my nginx file looks like:

location = /favicon.ico { access_log off; log_not_found off; }

    location /static/ {
        alias /home/me/projectdir/static/;
    }
    location /media/ {

       alias /home/me/projectdir/media/;
    }
    location / {
       include proxy_params;
       proxy_pass http://unix:/run/gunicorn.sock;
    }

but my media files returns 404 Not Found