change "if is missing" to "if /etc/machine-id is missing".
<function>sd_id128_get_machine()</function>,
<function>sd_id128_get_machine_app_specific()</function>, and
<function>sd_id128_get_boot_app_specific()</function> return <constant>-ENOENT</constant> if
- <filename>/etc/machine-id</filename> is missing, and <constant>-ENOMEDIUM</constant> if is empty
- or all zeros.</para>
+ <filename>/etc/machine-id</filename> is missing, and <constant>-ENOMEDIUM</constant> if
+ <filename>/etc/machine-id</filename> is empty or all zeros.</para>
</refsect1>
<xi:include href="libsystemd-pkgconfig.xml" />