the call.</para>
<para>For further details on the D-Bus type system, please consult the
- <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html#type-system">D-Bus Specification</ulink>.
+ <ulink url="https://dbus.freedesktop.org/doc/dbus-specification.html#type-system">D-Bus Specification</ulink>.
</para>
<table>