diff --git a/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json b/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json
index beb092c916949c9600df539c4acb852416b43cbb..2266bcadb893c25b05266b57a33176d65769ca9f 100644
--- a/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json
+++ b/data/grid5000/sites/nancy/clusters/graphene/nodes/graphene-73.json
@@ -76,7 +76,7 @@
       "enabled": true,
       "interface": "Ethernet",
       "ip": "172.17.64.73",
-      "mac": "00:e0:81:d5:07:43",
+      "mac": "00:10:20:3d:40:5f",
       "management": true,
       "mountable": false,
       "mounted": false,
diff --git a/generators/input/nancy-graphene.yaml b/generators/input/nancy-graphene.yaml
index f557a52f892e000fd73635c2c862d145d853b37a..978596813565cf9094e88c11f4bad05f4f1bb21e 100644
--- a/generators/input/nancy-graphene.yaml
+++ b/generators/input/nancy-graphene.yaml
@@ -1663,7 +1663,7 @@ graphene-73:
   switch_ipmi_pos: 1/0/18
   bios_ver: 7.02
   bios_release: 06/01/2011
-  mac_mgt: 00:e0:81:d5:07:43
+  mac_mgt: 00:10:20:3d:40:5f
   ip_mgt: 172.17.64.73
   ip_ib: 172.18.64.73
   ip_eth0: 172.16.64.73