diff --git a/user_manual/pim/sync_thunderbird.rst b/user_manual/pim/sync_thunderbird.rst
index f727208f2..6551dfdbe 100644
--- a/user_manual/pim/sync_thunderbird.rst
+++ b/user_manual/pim/sync_thunderbird.rst
@@ -36,7 +36,7 @@ Alternative: Using the CardBook add-on (Contacts only)
 2. In Cardbook:
 
    -  "Adressbook > New Adressbook **Remote** > Next
-   -  Fill in the address of your Nextcloud server, your user name and password
+   -  Select **CardDAV**, fill in the address of your Nextcloud server, your user name and password
 
 .. image:: ../images/new_addressbook.png