davfs2: /sbin/mount.davfs: different URL in /etc/fstab

I am trying to mount a webdav server in /etc/fstab with davfs, but when i try open this in my file manager (Thunar) i will get the error:

Failed to mount "My Folder"/sbin/mount.davfs: different URL in /etc/fstab

The entry in /etc/fstab looks like this:

http://<server_url>/my/path/Doe\054\040John/  /home/john/My\040Folder       davfs   user,noauto     0       0

But i am still able to mount it successfully with:

sudo mount -t davfs http://<server-url>/my/path/Doe,\ John/ /home/john/My\ Folder

Any ideas what am i doing wrong in /etc/fstab?

Thanks for your help!