diff --git a/mozilla/mailnews/app/profile/mailnews.js b/mozilla/mailnews/app/profile/mailnews.js
index 8b70c4a7481..60302eee823 100644
--- a/mozilla/mailnews/app/profile/mailnews.js
+++ b/mozilla/mailnews/app/profile/mailnews.js
@@ -136,7 +136,7 @@ pref("mail.addr_book.quicksearchquery.format","?(or(PrimaryEmail,c,@V)(DisplayNa
 //0=displayname, 1=lastname first, 2=firstname first
 pref("mail.addr_book.lastnamefirst", 0); 
 pref("mail.addr_book.displayName.autoGeneration", true);
-pref("mail.addr_book.displayName.lastnamefirst", true); // generate display names in last first order
+pref("mail.addr_book.displayName.lastnamefirst", false); // generate display names in last first order
 pref("mail.attach_vcard",                   false);
 pref("mail.html_compose",                   true);
 pref("mail.compose.other.header",	    "");