diff --git a/firewall.rc b/firewall.rc
index 7cdc486..19f0d22 100644
--- a/firewall.rc
+++ b/firewall.rc
@@ -49,7 +49,7 @@ DNSSERVEURS='85.31.205.33 78.153.240.29'
 #     du minifirewall en crontab
 # (Attention, si un proxy HTTP est installe en local
 #  mettre 0.0.0.0/0)
-HTTPSITES='security.debian.org pub.evolix.net volatile.debian.org'
+HTTPSITES='security.debian.org pub.evolix.net volatile.debian.org mirror.evolix.org'
 
 # HTTPS
 # /!\ Possibilite d'utiliser des noms de domaines
diff --git a/minifirewall b/minifirewall
index 8741bfd..9ee7865 100644
--- a/minifirewall
+++ b/minifirewall
@@ -91,7 +91,21 @@ $IPT -A LOG_ACCEPT -j LOG  --log-prefix '[IPTABLES ACCEPT] : '
 $IPT -A LOG_ACCEPT -j ACCEPT
 
 # Configuration
-test -f /etc/firewall.rc && . /etc/firewall.rc
+configfile="/etc/firewall.rc"
+
+if ! test -f $configfile; then
+	echo "$configfile does not exist" >&2
+	exit 1
+fi
+
+tmpfile=`mktemp`
+. $configfile 2>$tmpfile >&2
+if [ -s $tmpfile ]; then
+	echo "$configfile returns standard or error output (see below). Stopping."
+	cat $tmpfile
+	exit 1
+fi
+rm $tmpfile
 
 # trusted ip addresses
 $IPT -N ONLYTRUSTED