diff --git a/gestion/gen_confs/firewall_new.py b/gestion/gen_confs/firewall_new.py
index 7638ba99..b38aca69 100755
--- a/gestion/gen_confs/firewall_new.py
+++ b/gestion/gen_confs/firewall_new.py
@@ -553,7 +553,7 @@ class firewall_komaz(firewall_crans) :
                "handle 9999: sfq perturb 10" % locals())
             debit_ftp = 1000 # kbps
             tc("class add dev %(interface)s parent 1:1 classid 1:9997 "
-               "htb rate %(debit_ftp)skbps ceil %(debit_ftp)skbps" % locals())
+               "htb rate %(debit_ftp)skbps ceil %(debit_max)skbps" % locals())
             tc("qdisc add dev %(interface)s parent 1:9997 "
                "handle 9997: sfq perturb 10" % locals())