diff --git a/data/grid5000/sites/nancy/clusters/gros/nodes/gros-63.json b/data/grid5000/sites/nancy/clusters/gros/nodes/gros-63.json
index e759591c9dc48508b1a4567844406c40b8f02d44..18ae07cde44b1b6c2e5ca97f374cd7a85ff0d3fa 100644
--- a/data/grid5000/sites/nancy/clusters/gros/nodes/gros-63.json
+++ b/data/grid5000/sites/nancy/clusters/gros/nodes/gros-63.json
@@ -155,7 +155,7 @@
       "interface": "Ethernet",
       "ip": "172.17.66.63",
       "kavlan": false,
-      "mac": "54:bf:64:fb:ef:14",
+      "mac": "34:48:ed:e7:22:b4",
       "management": true,
       "mountable": false,
       "mounted": false,
diff --git a/input/grid5000/sites/nancy/clusters/gros/nodes/gros-63.yaml b/input/grid5000/sites/nancy/clusters/gros/nodes/gros-63.yaml
index 71809ec087de1f37959bee6cbe3790c77f62ec00..498897ffeb3c4443c7ce590dfd02e8d070d83ff5 100644
--- a/input/grid5000/sites/nancy/clusters/gros/nodes/gros-63.yaml
+++ b/input/grid5000/sites/nancy/clusters/gros/nodes/gros-63.yaml
@@ -21,7 +21,7 @@ gros-63:
   network_adapters:
     bmc:
       ip: 172.17.66.63
-      mac: 54:bf:64:fb:ef:14
+      mac: 34:48:ed:e7:22:b4
       management: true
     eth0:
       driver: mlx5_core