diff --git a/gestion/gen_confs/firewall.py b/gestion/gen_confs/firewall.py
index 5e0c894a..78631203 100755
--- a/gestion/gen_confs/firewall.py
+++ b/gestion/gen_confs/firewall.py
@@ -523,7 +523,7 @@ class firewall_komaz(firewall_crans) :
         iptables("-t mangle -A PREROUTING -p tcp -j CONNMARK --restore-mark")
         iptables("-t mangle -A PREROUTING -p tcp -m mark ! --mark 0x0 " +
                  "-j ACCEPT")
-        iptables("-t mangle -A PREROUTING -p tcp -m ipp2p --ipp2p -j MARK " +
+        iptables("-t mangle -A PREROUTING -p tcp -m ipp2p --bit -j MARK " +
                  "--set-mark %s" % conf_fw.mark['bittorrent'])
         iptables("-t mangle -A PREROUTING -p tcp -m mark " +
                  "--mark %s -j CONNMARK --save-mark" % conf_fw.mark['bittorrent'])