diff --git a/data/grid5000/sites/sophia/clusters/esterel6/nodes/esterel6-1.json b/data/grid5000/sites/sophia/clusters/esterel6/nodes/esterel6-1.json
index 1c243df81b7021c8fee34684a5fe6557d4ed8c06..8164c495239b91fd78c83e65c2673c340403d1eb 100644
--- a/data/grid5000/sites/sophia/clusters/esterel6/nodes/esterel6-1.json
+++ b/data/grid5000/sites/sophia/clusters/esterel6/nodes/esterel6-1.json
@@ -171,7 +171,7 @@
       "interface": "InfiniBand",
       "ip": "172.18.131.7",
       "kavlan": false,
-      "mac": "80:00:02:08:fe:80:00:00:00:00:00:00:24:8a:07:03:00:ff:d1:c1",
+      "mac": "24:8a:07:03:00:ff:d1:c1",
       "management": false,
       "model": "MT27500 Family [ConnectX-3]",
       "mountable": true,