diff --git a/preferences.xml b/preferences.xml
index cbfa4854f..bdc5fd38f 100644
--- a/preferences.xml
+++ b/preferences.xml
@@ -83,7 +83,7 @@ Started September 2000 by David Megginson, david@megginson.com
    <atc-chatter type="bool" userarchive="y">false</atc-chatter>
    <voice type="bool">true</voice>
    <voices>
-    <host type="string">localhost</host>
+    <host type="string" write="n">localhost</host>
     <port type="string">1314</port>
     <enabled type="bool">false</enabled>
     <atc alias="/sim/sound/voices/voice[0]/text"/>