diff --git a/gestion/gen_confs/firewall_komaz.py b/gestion/gen_confs/firewall_komaz.py
index 79ea93ea..5fe6f914 100755
--- a/gestion/gen_confs/firewall_komaz.py
+++ b/gestion/gen_confs/firewall_komaz.py
@@ -231,7 +231,7 @@ class firewall_komaz :
 	iptables("-A FORWARD -p icmp -j ACCEPT")
 	iptables("-A FORWARD -i %s -j BLACKLIST_DST" % self.eth_ext )
 	iptables("-A FORWARD -o %s -j BLACKLIST_SRC" % self.eth_ext )
-	iptables("-A FORWARD -s ! %s -d ! %s -j FILTRE_P2P", (self.zone_serveur, self.zone_serveur) )
+	iptables("-A FORWARD -s ! %s -d ! %s -j FILTRE_P2P" % (self.zone_serveur, self.zone_serveur) )
 	iptables("-A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT")
 	iptables("-A FORWARD -i %s -d %s -j EXT_VERS_SERVEURS" % (self.eth_ext, self.zone_serveur) )
 	iptables("-A FORWARD -o %s -s %s -j SERVEURS_VERS_EXT" % (self.eth_ext, self.zone_serveur) )