diff --git a/preferences.xml b/preferences.xml
index b511d164b..f3853dfb1 100644
--- a/preferences.xml
+++ b/preferences.xml
@@ -78,8 +78,9 @@ Started September 2000 by David Megginson, david@megginson.com
    </localizers>
   </navdb>
   <sound>
-   <volume userarchive="y">0.8</volume>
+   <volume type="float" userarchive="y">0.8</volume>
    <pause type="bool">false</pause>
+   <atc-chatter type="bool" userarchive="y">false</atc-chatter>
    <voice type="bool">true</voice>
    <voices>
     <host type="string">localhost</host>