diff --git a/gestion/gen_confs/dhcpd.py b/gestion/gen_confs/dhcpd.py
index dcb73ac4..1ea0f420 100755
--- a/gestion/gen_confs/dhcpd.py
+++ b/gestion/gen_confs/dhcpd.py
@@ -37,7 +37,7 @@ option option-119 code  119 = text ;
         # On rajoute les IP dynamiques
         base_conf = """shared-network "wifi" {
  subnet 10.231.144.0 netmask 255.255.248.0 {
-   default-lease-time 86400;
+   default-lease-time 900;
    option subnet-mask 255.255.248.0;
    option broadcast-address 10.231.151.255;
    option routers 10.231.148.1;