diff --git a/data/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.json b/data/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.json
index a764b080c930ceb3d54168ea109bbc3a57631f99..52b402420e650d7d3f8768b840fc06e2e27d69bd 100644
--- a/data/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.json
+++ b/data/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.json
@@ -235,7 +235,7 @@
       "ip": "172.16.79.1",
       "ip6": "2001:660:4406:500:10::1",
       "kavlan": true,
-      "mac": "04:3f:72:cd:c2:18",
+      "mac": "94:6d:ae:bd:88:f6",
       "management": false,
       "model": "MT27800 Family [ConnectX-5]",
       "mountable": true,
diff --git a/input/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.yaml b/input/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.yaml
index 2af5d7df5416277f8b724ca020e3755865d67028..7462fd2081c01a80d490245f9f44904e2cb37e72 100644
--- a/input/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.yaml
+++ b/input/grid5000/sites/nancy/clusters/grouille/nodes/grouille-1.yaml
@@ -116,7 +116,7 @@ grouille-1:
       firmware_version: 16.35.1012 (DEL0000000016)
       interface: Ethernet
       ip: 172.16.79.1
-      mac: 04:3f:72:cd:c2:18
+      mac: 94:6d:ae:bd:88:f6
       management: false
       model: MT27800 Family [ConnectX-5]
       name: eno33