diff --git a/eofirewall b/eofirewall
index ed8cfd3..69d9bcc 100755
--- a/eofirewall
+++ b/eofirewall
@@ -338,7 +338,7 @@ start()
     if [ $NAT == 1 ]; then
         log_action_msg "Activate nat"
         for proto in ftp irc sip h323; do modprobe nf_nat_$proto; done
-        $IPTABLES -t nat -A POSTROUTING -o $WAN_INT -s $LAN_NETWORK -j SNAT --to-source $IP
+        $IPTABLES -t nat -A POSTROUTING -s $LAN_NETWORK -j SNAT --to-source $IP
     fi
 
     ipt_hook