diff --git a/install/alternc.install b/install/alternc.install
index 0f7be03a..cf8e3ee6 100644
--- a/install/alternc.install
+++ b/install/alternc.install
@@ -71,7 +71,7 @@ if [ -e /etc/bind/named.conf ]; then
                   etc/bind/templates/named.template etc/bind/named.conf.options"
 fi
 if [ -d /etc/postfix ]; then
-    CONFIG_FILES="$CONFIG_FILES etc/postfix/myalias.cf etc/postfix/myrelay.cf
+    CONFIG_FILES="$CONFIG_FILES etc/postfix/master.cf etc/postfix/myalias.cf etc/postfix/myrelay.cf
                   etc/postfix/mydomain.cf etc/postfix/myrelay-domain.cf etc/postfix/mygid.cf etc/postfix/myquota.cf
                   etc/postfix/myvirtual.cf etc/postfix/mytransport.cf etc/postfix/sasl/smtpd.conf"
 fi