diff --git a/doc/config-reference/compute/section_compute-scheduler.xml b/doc/config-reference/compute/section_compute-scheduler.xml
index 1cffb57e46..ed96db3285 100644
--- a/doc/config-reference/compute/section_compute-scheduler.xml
+++ b/doc/config-reference/compute/section_compute-scheduler.xml
@@ -225,7 +225,8 @@ scheduler_available_filters = myfilter.MyFilter</programlisting>
                     <systemitem>AggregateImagePropertiesIsolation</systemitem>
                 filter by using the following options in the
                     <filename>nova.conf</filename> file:</para>
-            <programlisting language="ini"># Considers only keys matching the given namespace (string).
+<programlisting language="ini"># Considers only keys matching the given
+namespace (string). Multiple values can be given, as a comma-separated list.
 aggregate_image_properties_isolation_namespace = &lt;None>
 
 # Separator used between the namespace and keys (string).
@@ -236,7 +237,8 @@ aggregate_image_properties_isolation_separator = .</programlisting>
             <para>Matches properties defined in extra specs for an
             instance type against admin-defined properties on a host
             aggregate. Works with specifications that are scoped with
-            <literal>aggregate_instance_extra_specs</literal>.  For
+            <literal>aggregate_instance_extra_specs</literal>. Multiple
+            values can be given, as a comma-separated list. For
             backward compatibility, also works with non-scoped
             specifications; this action is highly discouraged because
             it conflicts with <link