diff --git a/gestion/gen_confs/dhcpd.py b/gestion/gen_confs/dhcpd.py
index 66ce5109..03cd4ce2 100755
--- a/gestion/gen_confs/dhcpd.py
+++ b/gestion/gen_confs/dhcpd.py
@@ -38,6 +38,7 @@ option option-119 code  119 = text ;
         base_conf = """shared-network "wifi" {
  subnet 10.231.144.0 netmask 255.255.248.0 {
    default-lease-time 900;
+   max-lease-time 900;
    option subnet-mask 255.255.248.0;
    option broadcast-address 10.231.151.255;
    option routers 10.231.148.1;